Hyaluronic acid is often added to facial oils and serums in hopes of reducing the appearance of wrinkles.
Leila Bird/Getty
Hyaluronic acid, a popular skin care ingredient, holds less than 1000 times its weight in water, despite its frequent promotion.
The ingredient is a humectant, a substance that attracts moisture. When applied topically, Can improve skin hydrationincrease elasticity and reduce wrinkle depth.
But chemists have long suspected that the idea that it could hold 1,000 times its weight in water was a stretch. This claim has been cited for decades.,…
Source: www.newscientist.com
