What is ammonium lactate, and what does it do on skin?
Ammonium lactate is a moisturizing topical ingredient (a salt of lactic acid) used to treat dry, rough skin and some texture-related skin conditions. It works mainly by increasing skin hydration and gently loosening buildup on the surface of the skin. As a result, it can make skin feel softer and look smoother over time 1.
How does ammonium lactate moisturize and soften rough skin?
Ammonium lactate helps by:
- Drawing and holding water in the skin’s outer layers (moisturizing effect).
- Acting like a keratolytic and humectant combination, which helps reduce dry, thickened scaling that can make skin feel rough 1.
What skin problems is it commonly used for?
Ammonium lactate is used for conditions where dryness and thickened, scaly skin are part of the problem, such as:
- Dry, rough skin (including keratosis-related texture changes)
- Scaling conditions where gentle exfoliation and hydration help improve appearance and feel 1
What does it do in practice—when should you expect results?
Users typically notice improvements gradually rather than immediately: hydration and smoother texture build over days to weeks as the outer layers shed and the skin becomes better moisturized 1.
What side effects or irritation can happen?
Because ammonium lactate contains lactic acid, it can sometimes cause:
- Mild stinging, burning, redness, or dryness, especially if the skin is irritated or overused 1
How do I use ammonium lactate safely?
Follow the product directions and consider these common precautions:
- Apply to clean, dry skin as directed.
- Start slowly if you have sensitive skin, since acidic, moisturizing products can irritate at first 1.
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