Lactic Acid

Also known as AHA, alpha hydroxy acid, sodium lactate

What is lactic acid?

Lactic acid is an AHA first found in sour milk. It dissolves dead skin on the surface and also pulls water into your skin, so it exfoliates without drying. It is a good first acid for dry or sensitive skin.
Best forDry skin Gentle exfoliation Rough texture Dullness

Pairs well with

  • Hyaluronic acid
  • Ceramides
  • Niacinamide
  • Sunscreen

Use with caution

  • Retinol on the same night
  • Other acids on the same night
  • Sunburned or broken skin

Lactic Acid FAQs

Lactic acid is gentler. Its molecule is larger, so it sinks in more slowly and stings less.

Use it two or three nights a week. Many people build up to every other night.

Start with 5%. Move to 10% after a month if your skin handles it.

Lactic acid lotions smooth rough, bumpy skin on arms and legs, including keratosis pilaris.

Related reading

Lactic acid for skin: benefits and products Glycolic acid vs lactic acid AHA and BHA: a guide to exfoliating acids

This content on this page is for general information only and is not medical advice. Always speak to a dermatologist before starting a new skincare routine.