Lactobionic Acid
Lactobionic Acid — a polyhydroxy acid formed from lactose that exfoliates gently while binding significant amounts of water to the skin. It is valued for its humectant and antioxidant properties and its reputation as one of the mildest exfoliating acids available.
Key points
- Lactobionic acid is a PHA composed of gluconic acid and galactose, giving it a large molecular structure.
- Its size slows skin penetration, which is linked to a low potential for stinging and irritation.
- It is a strong humectant, capable of drawing and holding water to support skin hydration.
- Lactobionic acid also has antioxidant and metal-chelating properties that may help protect the skin from environmental stress.
Frequently asked
How is lactobionic acid different from glycolic acid?
Lactobionic acid is a polyhydroxy acid with a much larger molecule than glycolic acid, so it penetrates more slowly and tends to be gentler. It also provides added humectant and antioxidant benefits that glycolic acid does not.
Can lactobionic acid be used every day?
Many people tolerate it well for regular use because it is among the mildest exfoliating acids, though frequency depends on your skin and the overall formula. Introduce it gradually and pair it with daily sunscreen.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
