Gluconolactone is a new-generation polyhydroxy acid. It is a gentle and hydrating exfoliant. Its large molecular size allows for superficial exfoliation without irritation, making it ideal for all skin types, including sensitive skin.
Why did we choose gluconolactone and not an alpha hydroxy acid like glycolic or lactic acid, or a beta hydroxy acid like salicylic acid?
Gluconolactone, glycolic acid, lactic acid, and salicylic acid belong to a group of compounds called hydroxy acids. Hydroxy acids have exfoliating activity and differ, among other aspects, in their molecular weight. The higher the molecular weight, the less ability to penetrate the skin and the gentler they are on the skin.
Gluconolactone has a higher molecular weight than glycolic or lactic acid (alpha hydroxy acids), and these, in turn, have a higher molecular weight than salicylic acid (beta hydroxy acid). Therefore, gluconolactone provides a more superficial and gentler exfoliation than alpha hydroxy acids, and these, in turn, provide a gentler exfoliation than salicylic acid.
For Qwadrum's facial cleansing gel (Active Cleansing Gel), we selected gluconolactone as the exfoliant because we sought a gentle, non-irritating exfoliation for daily use on healthy skin.
Depending on the characteristics we seek in each product, it is important to select the active ingredient that will provide that effect. There are cases where strong exfoliation is desired, despite causing irritation, because the skin needs it. In these cases, salicylic acid would be suitable.