Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+ Review

Name: Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+ Review
Item: Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+
Rating: 83
Author: DermApproved

Verdicts

How well it fits each concern

Verdict by concern tap a concern for the case

Full protectionfor Sun DamageBroad-spectrum SPF 50 with Uvinul A Plus, bisoctrizole (Tinosorb M), iscotrizinol (Uvasorb HEB): the protection sun damage calls for.Moderate evidenceGentle100 reviews collected

The case for it

DHHB is a first-line active — approved, monograph-listed or named in current guidelines — for this concern.
It is plausibly present at a working level, though the concentration is not declared.
The formula carries none of the triggers this concern is sensitive to.

What would change this: A declared concentration would move this to a firmer reading of the dose.

Same rule for everyone. “Full protection” is the verdict on 2,288 of 45,024 concern verdicts across the catalog; rule P1 decided 2,232 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work

Rule: P1 — Photoprotection standing is regulatory (M020 / Annex VI filters; 21 CFR 201.327 attaches the early-skin-aging claim to tested broad-spectrum SPF 15+). SPF 30 is the AAD daily-use bar. · the full register
Carrying active: DHHB
Standing: first line — a regulator recognises it for this use; trials support it · per Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products (recast) — Annex VI, List of UV filters allowed in cosmetic products (Official Journal of the European Union L 342, 22.12.2009, via EUR-Lex (PDF)), opened September 1, 2026
Form: plausible — studied range 10%, from the OTC monograph or label; needs leave-on contact
Tolerability: gentle
Row checked: against its sources on September 1, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

Sunscreen and prevention of skin aging: a randomized trial — Annals of Internal Medicine (2013), opened September 1, 2026
21 CFR § 201.327 Over-the-counter sunscreen drug products; required labeling based on effectiveness testing — US FDA — 21 CFR 201.327, via Cornell Legal Information Institute, opened September 1, 2026
Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products (recast) — Annex VI, List of UV filters allowed in cosmetic products — Official Journal of the European Union L 342, 22.12.2009, via EUR-Lex (PDF) (2009), opened September 1, 2026

All sun damage products →

Full protectionfor AgingBroad-spectrum SPF 50 with Uvinul A Plus, bisoctrizole (Tinosorb M), iscotrizinol (Uvasorb HEB): the protection aging calls for.Moderate evidenceGentle100 reviews collected

The case for it

Niacinamide has early or mechanistic evidence for this concern, not trial-backed standing.
It is plausibly present at a working level, though the concentration is not declared.
The formula carries none of the triggers this concern is sensitive to.

What would change this: A declared concentration would move this to a firmer reading of the dose.

Same rule for everyone. “Full protection” is the verdict on 2,288 of 45,024 concern verdicts across the catalog; rule P1 decided 2,232 of them. Unchanged since September 5, 2026, engine 5.1.1.

Brand or formulator? Disclose a concentration or correct a fact →

Show the work

Rule: P1 — Photoprotection standing is regulatory (M020 / Annex VI filters; 21 CFR 201.327 attaches the early-skin-aging claim to tested broad-spectrum SPF 15+). SPF 30 is the AAD daily-use bar. · the full register
Carrying active: Niacinamide
Standing: plausible — trials support it
Form: plausible — studied range 4–5%, from the trials on the row; needs leave-on contact; judge it after ~8 weeks
Tolerability: gentle
Row checked: against its sources on July 17, 2026 (evidence table ev-2026.09-r228)

The studies behind the evidence row

Topical niacinamide reduces yellowing, wrinkling, red blotchiness, and hyperpigmented spots in aging facial skin — International Journal of Cosmetic Science (Bissett DL et al — The Procter & Gamble Company, Cincinnati) (2004), opened July 16, 2026
Niacinamide: A B vitamin that improves aging facial skin appearance — Dermatologic Surgery (Bissett DL, Oblong JE, Berge CA — The Procter & Gamble Company, Miami Valley Laboratories) (2005), opened July 16, 2026
The clinical anti-aging effects of topical kinetin and niacinamide in Asians: a randomized, double-blind, placebo-controlled, split-face comparative trial — Journal of Cosmetic Dermatology (National Taiwan University Hospital) (2007), opened July 16, 2026
Evaluation of anti-wrinkle effects of a novel cosmetic containing niacinamide — Journal of Dermatology (Kinki University School of Medicine, Osaka) (2008), opened July 16, 2026
A randomized, controlled comparative study of the wrinkle reduction benefits of a cosmetic niacinamide/peptide/retinyl propionate product regimen vs. a prescription 0·02% tretinoin product regimen — British Journal of Dermatology (P&G-funded; 5 P&G employees + 5 paid P&G consultants) (2010), opened July 16, 2026
Skincare ingredients recommended by cosmetic dermatologists: A Delphi consensus study — Journal of the American Academy of Dermatology — expert Delphi consensus, NOT a graded guideline (2025), opened July 16, 2026

All aging products →

Also listed for Dullness — the actives here (Uvinul A Plus (DHHB) are in our research queue for that concern; there is no verdict until their evidence rows are written. That is a gap in our table, not a mark against the product.

Does the jobDoes what a sunscreen is for: UVA coverage, kind to the skin wearing it. Not measured from the label: pleasant enough to actually use.

A verdict is DermApproved’s assessment of how well a product’s ingredients fit a concern — never a claim about what the product treats. Evidence dots and collected reviews sit beside it and are never blended in. Rules 0.5.1 · evidence table ev-2026.09-r228 · how we decide

Assessment

Pros & Cons

Pros

✓ Independently verified SPF 50+ — lab-tested at 52.5 and 63.1 by two separate facilities
✓ Virtually weightless texture that feels like wearing nothing — the gold standard in sunscreen comfort
✓ 30% rice extract, niacinamide, probiotic ferments, and adenosine provide genuine skincare benefits
✓ Essentially invisible on most skin tones with minimal to no white cast
✓ At $14.40 for 50ml, affordable enough for generous application and worry-free reapplication
✓ Broad skin type compatibility — works for nearly everyone from dry to oily

Cons

✗ Slightly dewy finish may require powder for very oily skin types in humid conditions
✗ 50ml tube depletes within 3-5 weeks with proper daily application amounts
✗ Tinosorb M nanoparticles may produce subtle cast on very deep skin tones
✗ Can pill under certain heavy moisturizers or silicone-heavy products
✗ Not water-resistant — reapplication needed after swimming or heavy sweating

Review

Full Review

There is a before and after in the history of K-beauty sunscreens, and the dividing line is this tube. Before the Relief Sun: Rice + Probiotics, the landscape was binary: you could have affordable sunscreen that felt like spackling paste, or elegant sunscreen that cost thirty-five dollars and came in a bottle designed by someone who also does perfume packaging. Beauty of Joseon walked into this market in 2021 and quietly detonated the assumption that these two qualities couldn't coexist at $14.

The product went viral in the most authentic way possible. No paid campaigns, no celebrity endorsements, no manufactured scarcity. Users tried it, found that it felt like nothing on their skin, confirmed it actually protected them from the sun, and told everyone they knew. Reddit threads. TikTok reviews. Dermatologist recommendation videos. The organic spread was so overwhelming that Beauty of Joseon repeatedly couldn't keep it in stock.

But viral products don't always survive scrutiny, which is why what happened next matters: independent SPF testing. When beauty enthusiasts commissioned laboratory analysis — one lab in South Korea, one in Spain — the results came back at 52.5 and 63.1 respectively, both exceeding the SPF 50+ claim. The product wasn't just pleasant to wear; it was doing its job.

The formulation deserves serious attention. The UV filter system combines four chemical filters that cover the full UV spectrum: DHHB for UVA1, ethylhexyl triazone for UVB, methylene bis-benzotriazolyl tetramethylbutylphenol (Tinosorb M) for broad coverage, and diethylhexyl butamido triazone (Iscotrizinol) for additional UVB stability. These are modern, photostable filters — the same technology found in premium European formulations. They don't degrade under UV exposure the way older filters like avobenzone can. There's a regulatory footnote American buyers should understand: none of these four filters has yet cleared the FDA's glacial approval process, which is why this is an import product rather than a drugstore staple — not a safety verdict, just bureaucratic lag, since Korean sunscreens are tested to the same ISO 24444 standard European formulations use.

Beyond UV protection, the formula packs genuine skincare punch. The 30% rice extract base delivers amino acids, vitamins, and mild brightening activity. Niacinamide — listed eighth, suggesting meaningful concentration — provides barrier strengthening, brightening, and anti-inflammatory benefits. A multi-source probiotic ferment complex (including lactobacillus, saccharomyces, and aspergillus ferments) supports the skin microbiome. And adenosine, Korea's approved anti-wrinkle ingredient, adds collagen-supporting activity.

The texture is where this sunscreen earns its cult status. It applies like a lightweight lotion — fluid, thin, and cooperative. There's no resistance, no heavy film, no sense that you've applied a protective layer at all. It absorbs within seconds and sets to a finish that's natural with the faintest hint of dewiness. On most skin tones, it's completely invisible. Some users with very deep skin tones have reported a subtle cast from the Tinosorb M nanoparticles, but the majority find it undetectable.

As a daily sunscreen, the experience is transformative for people who previously dreaded SPF application. When your sunscreen feels like skincare — when it actually makes your skin look and feel better rather than worse — you stop viewing it as a chore and start viewing it as a benefit. This psychological shift is arguably as important as the UV protection itself, because the best sunscreen in the world does nothing if it stays in the drawer.

The limitations are minor but real. Very oily skin types may find the finish slightly too dewy in humid conditions — a powder or matte primer on top resolves this. The 50ml tube runs out faster than you'd like when you're applying the proper two-finger-length amount daily. And some users experience pilling when layering it over heavier moisturizers or silicone-based primers — a compatibility issue that a quick trial with your existing routine will resolve. Two more practicalities round out the picture: the filter system is considered compatible with pregnancy, and the formula's ferments and esters keep it off the strictest fungal-acne-safe lists, so malassezia-managers should trial carefully. At night, an oil or balm first cleanse takes it off cleanly — modern filters grip better than their weightless feel suggests.

At $14.40 for 50ml, the financial argument for this sunscreen is almost unfair to competitors. It's inexpensive enough that you can apply generously without wincing, reapply without counting the cost, and keep one at home and one in your bag without budgetary guilt. This accessibility has done more for real-world sun protection than any luxury SPF ever could.

The Relief Sun: Rice + Probiotics isn't just a product — it's proof of concept. Proof that sunscreen can be affordable and elegant. Proof that K-beauty's formulation expertise can compete with the best European pharmaceutical sunscreens at a fraction of the price. Proof that when you remove the barriers to daily SPF use — cost, texture, finish, feel — people will actually protect their skin. In a category full of products that feel like obligations, this one feels like a gift. The numbers behind the phenomenon are hard to argue with: thirty thousand reviews averaging 4.6 stars, an almost unheard-of volume for a single SKU, with the praise overwhelmingly repeating the same three notes — invisible wear, guilt-free reapplication, makeup compatibility — and the complaints confined to summer dewiness on oily skin, the fast-emptying tube, and occasional pilling over heavy layers. Very few products survive contact with an audience this large this well.

Formula

Key Ingredients

The hero actives that drive this product's performance.

Ingredient	Function	Evidence
Rice Extract (30%) (30%)	Forms the hydrating base of this sunscreen at 30%, delivering rice-derived amino acids, vitamins, and mild brightening activity. The rice creates a lightweight, nourishing vehicle for the UV filters that provides genuine skincare benefits beyond simple moisture.	Not yet assessed
DHHB (Diethylamino Hydroxybenzoyl Hexyl Benzoate)	A photostable UVA filter that specifically targets the long-wave UVA1 range responsible for photoaging. Paired with ethylhexyl triazone and Tinosorb M in a comprehensive filter system that earned verified SPF ratings of 52.5 and 63.1 in independent lab testing.	Regulator-approved for Sun Damage · limited certainty
Niacinamide	Eighth in the INCI list, suggesting a meaningful concentration. Provides brightening, anti-inflammatory, and barrier-strengthening benefits that complement the UV protection — helping repair the skin processes that UV damage disrupts.	Limited for Sun Damage
Probiotic Ferment Complex	A multi-source ferment blend including lactobacillus/pumpkin ferment, bacillus/soybean ferment, saccharomyces/rice ferment filtrate, and lactobacillus/rice ferment. These fermented extracts support the skin microbiome and provide postbiotic compounds that enhance skin barrier function during UV exposure.	Not yet assessed
Adenosine	A Korean-approved anti-wrinkle functional ingredient that supports collagen synthesis, adding anti-aging benefits to the sunscreen's already robust protective and nourishing profile.	Limited for Aging

Full INCI List

Water, Oryza Sativa (Rice) Extract, Dibutyl Adipate, Propanediol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Polymethylsilsesquioxane, Ethylhexyl Triazone, Niacinamide, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Coco-Caprylate/Caprate, Caprylyl Methicone, Diethylhexyl Butamido Triazone, Glycerin, Butylene Glycol, Oryza Sativa (Rice) Germ Extract, Camellia Sinensis Leaf Extract, Lactobacillus/Pumpkin Ferment Extract, Bacillus/Soybean Ferment Extract, Saccharum Officinarum (Sugarcane) Extract, Macrocystis Pyrifera (Kelp) Extract, Cocos Nucifera (Coconut) Fruit Extract, Panax Ginseng Root Extract, Monascus/Rice Ferment, Pentylene Glycol, Behenyl Alcohol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Decyl Glucoside, Tromethamine, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, 1,2-Hexanediol, Sodium Stearoyl Glutamate, Polyacrylate Crosspolymer-6, Ethylhexylglycerin, Adenosine, Xanthan Gum, Tocopherol, Lactobacillus/Rice Ferment, Aspergillus Ferment, Saccharomyces/Rice Ferment Filtrate

Safety & Formulation Facts

✓ Pregnancy Safe ✓ Fragrance Free✓ Alcohol Free✗ Oil Free✗ Silicone Free✓ Paraben Free✓ Sulfate Free✓ Cruelty Free✓ Vegan✗ Fungal Acne Safe

Compatibility

Skin Match

Best For

normal combination dry

Works For

sensitive oily

Routine Step

sunscreen

Time of Day

AM

Layering Tips

Apply generously as the last step of morning skincare. The lightweight texture layers well under makeup. Can double as a light moisturizer for normal skin in summer. Reapply every 2 hours during sun exposure.

Results Timeline

Immediate UV protection with a natural, slightly dewy finish. The 30% rice extract provides subtle cumulative brightening over weeks of daily use. Consistent use prevents photoaging and sun damage.

Pairs Well With

hydrating tonerslightweight serumssetting powder for matte finish

Planning a combo? Check it against what you already use

Sample AM Routine

Gentle cleanser
Toner
Lightweight serum
Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+

Sample PM Routine

Oil cleanser (to remove)
Gentle cleanser
Toner
Treatment serum
Moisturizer

Evidence

Science & Expert Perspective

The Science

The UV filter system in this sunscreen has been independently validated by two laboratories, making it one of the most transparently tested K-beauty sunscreens available.

The four-filter combination provides comprehensive spectral coverage. DHHB targets UVA1 (340-400nm), the radiation most responsible for dermal photoaging. Ethylhexyl triazone and diethylhexyl butamido triazone (Iscotrizinol) provide potent UVB absorption. Methylene bis-benzotriazolyl tetramethylbutylphenol (Tinosorb M, in nano form) contributes both UVA and UVB coverage as an organic particulate filter.

The independent SPF verification is noteworthy. Testing at a Korean laboratory yielded SPF 52.5±5.8, while a Spanish laboratory measured SPF 63.1±0.6 — both substantially exceeding the SPF 50+ label claim. This level of transparent third-party validation is uncommon in the cosmetic sunscreen market.

Niacinamide, present at a likely significant concentration (eighth in the INCI list, after UV filters), provides photoprotective benefits beyond UV filtering. A study reported in Photodermatology, Photoimmunology & Photomedicine has demonstrated that topical niacinamide enhances cellular energy production and DNA repair mechanisms following UV exposure, effectively supporting the skin's own recovery processes.

The probiotic ferment complex includes Lactobacillus/Pumpkin Ferment Extract and Saccharomyces/Rice Ferment Filtrate, among others. While research on topical probiotics in sunscreen is still emerging, studies have shown that ferment lysates can modulate skin immune response and strengthen barrier function — both relevant to UV-stressed skin.

Adenosine's anti-wrinkle mechanism involves stimulation of collagen synthesis through adenosine receptor activation. Korean MFDS certification of adenosine as a functional anti-wrinkle ingredient is based on clinical studies demonstrating measurable wrinkle reduction.

Dermatologist Perspective

Dermatologists widely recognize this sunscreen as one of the best-value options available for daily UV protection. Dermatologists in everyday practice commonly find that the independently verified SPF testing sets this product apart from many competitors whose protection claims have not been independently validated. The combination of modern, photostable UV filters with skincare actives (niacinamide, adenosine) aligns with the dermatological principle that sunscreen should be a treatment step, not just a barrier. Dermatologists commonly recommend this product for patients who resist daily sunscreen use due to texture complaints — its lightweight, invisible application addresses the most common barriers to sunscreen adherence.

Guidance

Usage & Recommendations

How to Use

Apply approximately two finger-lengths (1.25ml) to the face as the last step of your morning skincare routine. Spread evenly across face and neck. Wait 1-2 minutes before applying makeup. Reapply every 2 hours during prolonged sun exposure, or after swimming, sweating, or toweling off. Remove in the evening with an oil-based cleanser — the UV filters require oil or micellar water for thorough removal.

Value Assessment

At $14.40 for 50ml, this is arguably the best value sunscreen in any market category. The UV filter system — four modern, photostable filters independently verified at SPF 52.5-63.1 — matches or exceeds formulations from brands charging $30-50. Add 30% rice extract, niacinamide, probiotic ferments, and adenosine, and the ingredient-to-price ratio becomes extraordinary. The practical monthly cost of $14-20 (assuming proper daily application) is lower than many budget sunscreens that offer far less sophisticated formulations. For comparison, La Roche-Posay Anthelios with similar filter technology retails at $30-40 for 50ml without the rice extract or probiotic complex.

Who Should Buy

Everyone who wears sunscreen daily — this is as close to a universal recommendation as sunscreen gets. Particularly ideal for those who find most sunscreens unpleasant to wear, anyone looking for skincare benefits alongside UV protection, K-beauty enthusiasts, budget-conscious shoppers who refuse to compromise on protection, and people with normal, combination, or dry skin who want a slightly dewy finish.

Who Should Skip

Those with very deep skin tones who are particularly sensitive to any hint of white cast should test this carefully, as the Tinosorb M nanoparticles can be visible on some deeper complexions. Very oily skin types in humid climates may find the dewy finish too much — consider the Matte Sun Stick instead.

Details

Product Details

Texture

A lightweight, fluid cream that applies almost like a thin lotion. Sets to a natural, slightly dewy finish without greasiness. Virtually transparent on all skin tones.

Scent

No added fragrance. A very faint, neutral scent from the rice and ferment extracts that is barely noticeable.

Packaging

50ml squeeze tube with minimalist Beauty of Joseon design. Also available in a 10ml travel size. The tube format allows controlled dispensing for consistent application.

Finish

naturaldewylightweightnon-greasy

What to Expect on First Use

On first application, the surprise is how little this feels like sunscreen. It's light, fluid, and absorbs quickly — no thick, paste-like resistance. The finish is natural with a subtle glow. No stinging, no tingling, no fragrance assault. It's the kind of product that makes you realize most sunscreens are needlessly unpleasant.

How Long It Lasts

3-5 weeks with daily face and neck application at proper amount

Period After Opening

12 months

Opened yours? Track the toss-by date

Best Season

All Year

Certifications

Cruelty-FreeVegan

Background

The Story Behind This Product

The Relief Sun: Rice + Probiotics became a global phenomenon around 2022-2023, going viral on TikTok and Reddit simultaneously. Beauty of Joseon had to dramatically increase production to meet demand. What made it viral wasn't aggressive marketing — it was thousands of organic user testimonials praising its weightless texture and genuine effectiveness. Independent SPF testing commissioned by beauty influencers confirmed its protection claims, cementing its reputation. It has since become one of the most-recommended sunscreens in the history of the K-beauty movement.

About Beauty of Joseon Established Brand (5–20 years)

Beauty of Joseon was founded in 2016 and reinvented in 2019 with a focus on traditional Korean hanbang ingredients combined with modern formulation science. The brand has built a strong global following and is now stocked at Sephora, with products that consistently earn high user ratings across multiple retail platforms.

Brand founded: 2016 · Product launched: 2021

Myth vs. Reality

Common Myths

Myth

Cheap sunscreens can't provide real SPF 50+ protection.

Reality

Two independent laboratories — one in South Korea and one in Spain — verified this sunscreen's SPF at 52.5±5.8 and 63.1±0.6 respectively, exceeding the label claim. Price does not determine efficacy — formulation skill does.

Myth

You need to use a Western or European sunscreen for reliable protection.

Reality

Korean sunscreens are tested to the same ISO standard (ISO 24444) as European products. The UV filters used in this product (DHHB, ethylhexyl triazone, Tinosorb M, iscotrizinol) are the same modern filters used in premium European formulations.

FAQ

Frequently Asked Questions

Does this sunscreen really have SPF 50+?

Yes — and it's been independently verified. Two separate laboratories, one in South Korea and one in Spain, tested this sunscreen and measured SPF values of 52.5±5.8 and 63.1±0.6 respectively. Both exceed the SPF 50+ label claim.

Is there a white cast?

For most skin tones, no. This is primarily a chemical sunscreen with organic UV filters that are transparent. However, it does contain methylene bis-benzotriazolyl tetramethylbutylphenol (Tinosorb M) in nano form, which can leave a very slight cast on deeper skin tones. The vast majority of users, including those with medium and dark skin, report no visible white cast.

Can I use this as a moisturizer and sunscreen in one?

For normal and combination skin in warm, humid weather, yes. The 30% rice extract, glycerin, and niacinamide provide enough hydration to serve as a light moisturizer. In winter or for dry skin, you'll still want a separate moisturizer underneath.

How does this compare to the Relief Sun Aqua-Fresh version?

The original Rice + Probiotics has a slightly lighter, more matte finish and focuses on niacinamide and probiotic ferments. The Aqua-Fresh version is more hydrating with a dewier finish and adds ceramide NP, phytosphingosine, and ferulic acid. Choose the original for a more universal, slightly matte finish; choose Aqua-Fresh for extra hydration and barrier repair.

Why did this sunscreen go viral?

A perfect combination of factors: lightweight texture that feels like wearing nothing, zero white cast, legitimate SPF 50+ protection verified by independent labs, beneficial skincare ingredients (rice, niacinamide, probiotics), and a price ($14.40) that made generous daily application financially painless. Organic word-of-mouth from users who genuinely loved it did the rest.

Is this sunscreen water-resistant?

This sunscreen is not marketed as water-resistant. Reapply after swimming, heavy sweating, or toweling off. For water activities, consider a dedicated water-resistant sunscreen.

Reviews

What Reviewers Tend to Say

Recurring themes our editors read across retailer reviews of this product — summaries in our words, not quotations, and not a substitute for your own patch test.

Common Praise

Virtually undetectable on the skin — feels like wearing nothing

No white cast whatsoever on any skin tone

Affordable enough to apply generously and reapply without guilt

Layers perfectly under makeup

Rice extract gives a subtle brightness over time

Common Complaints

Can feel slightly greasy on very oily skin in summer

50ml size runs out quickly with proper daily application

Slight white cast reported on deeper skin tones by some users

Contains nano-sized UV filter (Tinosorb M) which some prefer to avoid

Texture may pill under certain heavy moisturizers

Notable Endorsements

Independent SPF verification: 52.5 (Korea) and 63.1 (Spain)Sephora K-Beauty best-sellerRecommended by Dr. Dray, James Welsh, and numerous dermatologist influencersViral on TikTok and Reddit r/SkincareAddiction