Azelaic acid is a type of acid that's found in some grains like rye, wheat, and barley. It's naturally produced by Malassezia furfur (also known as Pityrosporum ovale), a yeast found on healthy skin.

There's arguably no category of skincare ingredients that can do more than direct acids. They're well-known—and beloved—for their ability to do everything from brighten skin to unclog pores. But, ...

Salicylic acid helps treat acne, dandruff, warts, and psoriasis. Using salicylic acid can make your skin dry and irritated if you do not use it correctly. Speaking with a doctor before using salicylic ...

The best affordable hyaluronic acid serums under £30. These serums hydrate, soothe and calm skin without being expensive.