Maltobionic Acid

Maltobionic acid is a polyhydroxy acid (PHA) derived from maltose, a naturally occurring sugar. Unlike alpha-hydroxy acids such as glycolic acid, PHAs have a larger molecular structure, which means they work more gradually and tend to be less irritating to the skin.In skincare formulations, maltobionic acid functions primarily as a buffering agent—helping to stabilise and balance the pH of products. It also gently exfoliates the skin's surface by breaking down some of the bonds between dead skin cells, promoting cell turnover without aggressive action.

Helps with Anti-Ageing. Brightening. Reduces Large Pores. Helps with Dark Spots. Good for Texture

Maltobionic acid works by weakening the bonds (desmosomes) that hold dead skin cells together on the epidermis. This encourages natural shedding and cell turnover. Because the molecule is larger than glycolic or lactic acid, it penetrates more slowly and sits predominantly on the skin surface, making it a gentler option for exfoliation.As a buffering agent, maltobionic acid helps maintain a stable pH in formulations, which can reduce irritation and improve the overall tolerance of a product—particularly when combined with other actives.

Maltobionic acid is typically found in cleansers, toners, or leave-on serums. Start with 2–3 times per week if your skin is new to chemical exfoliants, then increase frequency as tolerated. Because it is gentler than stronger acids, it is often suitable for daily use in lower concentrations. Always follow with a moisturiser and broad-spectrum SPF during the day, as any exfoliant can increase sun sensitivity.

Maltobionic acid is generally well-tolerated and suitable for sensitive skin types. Avoid use if you have active wounds, severe inflammation, or a compromised skin barrier; introduce gradually to minimise any potential mild tingling or dryness.