Lactic Acid in Skincare

Lactic acid gently exfoliates the skin’s surface, helping to smooth texture, brighten dullness, and support a more even-looking tone. It is also a humectant, meaning it can help attract moisture, which is why many people find it less drying than stronger-feeling exfoliating acids.

Lactic acid is often considered one of the gentler AHAs, so it can be a good option for skin that finds stronger exfoliants too intense. Start slowly, choose a lower-strength formula if you are new to acids, and reduce use if skin feels tight, red, or uncomfortable.

Begin with one to three times a week, then build gradually if your skin tolerates it well. Some rinse-off cleansers may be suitable more often, while leave-on treatments, pads, and stronger formulas are best introduced slowly to avoid over-exfoliation.

Because lactic acid encourages exfoliation, some people may notice temporary congestion as their skin adjusts. However, stinging, burning, ongoing redness, or breakouts that do not settle may suggest irritation rather than purging, so pause use and simplify your routine if needed. Always apply SPF during the day, as AHAs can increase sun sensitivity.