Medically reviewed by Deeptej Singh, MD Key Takeaways Lactic acid is an alpha hydroxy acid that is used on the skin to remove dead skin cells and help fade dark spots and soften fine lines.It comes in ...

Lactic acid (LA) has transitioned from being perceived as a mere glycolytic waste product to a pivotal regulator of tumor–immune crosstalk. Historical milestones—from Scheele’s 1780 isolation from ...

NBC Select independently determines what we cover and recommend. When you click on or buy through our links, we earn a commission. Learn more. Dealing with congested pores? Noticing an uneven skin ...