Malic acid is 2-hydroxy dicarboxylic acid  with the chemical formula C4H6O5 . It is produced naturally in the body when converting carbohydrates into energy. Malic acid belongs to the class of fruit acids called alpha hydroxy acids (AHAs).

Alpha hydroxy acids break down the bonds between skin cells and help in shedding the dead skin cells. This paves way for a new layer of skin to appear on the surface.

Top Benefits Of Malic Acid
1. Exfoliation, Even Complexion And Improved Acne
Malic acid breaks down the glue that holds the dead skin cells (keratinocytes) together [2]. Once the dead skin cells are washed away from the top layer of the skin, a fresh layer is pushed to the surface. Your skin is now smoother, evened out and radiant than before. Exfoliation helps clearing up clogged pores and improves acne.

2. Skin Hydration
Malic acid is a humectant [3] meaning it can attract moisture from the air and trap it in the skin. This is the reason why you often see this ingredient in moisturizers.

3. Restores pH Balance
First, let us break down skin pH for you. The sebum (natural oil) and sweat in the skin mix to form a thin film called the acid mantle [4]. This layer acts as a protective barrier against foreign organisms. It also prevents water loss from your skin. Most alpha hydroxy acids disrupt this pH balance. Malic acid on the other hand restores the pH in your skin.

4. Reduced Wrinkles & Anti-Aging
Malic acid helps in skin cell turnover, thus promoting collagen production. This is why you will find this ingredient in anti-aging skin care [5]. Collagen is a fibrous protein responsible for holding the skin cells together. It decreases with age.