Toners are often very effective for cleansing the skin and shrinking pores. When shopping for toners, make sure you choose one that is appropriate for your skin type.
The most gentle type of toner is a skin freshener they are very gentle and contain little or no alcohol. A common example is rosewater, use this if you have dry or sensitive skin.
Another type of toner is a skin tonic, they are slightly stronger and contain a higher alcohol content. Orange flower water is a common example, used this if you have normal or combination skin.
Astringents are the strongest type of toner and have the highest alcohol content. Witch hazel is a common example, use this if you have oily skin.