Sodium lactate is the natural sodium salt of lactic acid derived from the fermentation of sugar.
It’s a natural moisturising factor (NMF) which means it’s responsible for maintaining adequate hydration of the stratum corneum (the outer layer of your skin). Benefits include:
- maintaining skin elasticity
- activating hydrolytic enzymes (allowing dead cells to shed naturally)
- supporting healthy skin barrier function (mitigates TEWL and susceptibility to environmental damage)
The water holding capacity of sodium lactate is double that of glycerin. It’s one of the most effective humectants in both humid and arid climates. It also provides a soft and non-tacky skin feel.
Sodium lactate can boost the effectiveness of AHAs as well as the brightening capacity of vitamin C. Plus, it can help facilitate product preservation.