Hyaluronic acid has become a sensation in the cosmetic industry, fervently embraced by fashion icons and celebrities who hail it as the "golden hydrator" for eternal youth. Yet why does it leave her skin radiant as jade while yielding no visible results on your face? How exactly should hyaluronic acid be used to achieve optimal beauty effects?
Reporter: When mentioning hyaluronic acid, many first think of topical creams or oral supplements. Yet those who've tried these often feel disappointed. Compared to injectable hyaluronic acid, why can't topical or oral forms deliver comparable cosmetic results?
Doctor: Many people first learned about hyaluronic acid through beauty icon Da S. In her book, Da S stated: "Hyaluronic acid is like the clay God used to create Adam and Eve. Many Hollywood actresses would be lost without it." To boost product appeal, health supplement manufacturers have also launched hyaluronic acid-infused products.
Hyaluronic acid molecules weigh hundreds of thousands of pounds. It's nearly impossible for such large molecules to reach the skin via oral absorption and circulation. Hyaluronic acid synthesis and breakdown involve complex biochemical processes. Its basic building blocks—glucuronic acid and N-acetylglucosamine (both derived from glucose)——alternately connect under the action of hyaluronan synthase. The activity and concentration of this enzyme are crucial for determining hyaluronic acid production levels. When ingested, hyaluronic acid undergoes digestion and circulation, ultimately degrading into carbon dioxide and water. The likelihood of nutrients reaching the skin is negligible, and the claim that it can directly penetrate the skin's surface layer, as advertised, is virtually impossible.
Hyaluronic acid in typical moisturizing cosmetics is merely applied to the skin's surface and cannot be absorbed internally, making its wrinkle-reducing effects quite limited. Hyaluronic acid serums provide higher concentrations of hyaluronic acid, yet their absorption rate remains only 2-3%, necessitating use alongside toners or essences.When skin is dry, using hyaluronic acid alone does not provide direct moisturizing effects. Instead, it draws significant moisture from the skin, potentially leaving it drier and more parched after application.
The mechanism of injectable hyaluronic acid for cosmetic purposes involves injecting it as a filler into dermal wrinkles, depressions, or areas requiring plumping. This replenishes lost hyaluronic acid to reduce wrinkles and can even fill tissue deficiencies, improving facial contours and appearance for immediate wrinkle reduction and facial enhancement.This ingredient also locks moisture within the skin, imparting elasticity and radiance. Hyaluronic acid is fully biodegradable and highly safe.