Hyaluronic Acid: A Natural Biopolymer with a Broad Range of Biomedical and Industrial Applications

Grigorij Kogan, Ladislav Šoltés, Robert Stern, Peter Gemeiner

HA can mobilize water in tissue and thereby change dermal volume and compressibility. It can also influence cell proliferation, differentiation and tissue repair. Changes in HA observed with aging, wound healing and degenerative diseases further emphasize its importance in skin.

Hyaluronan: The Natural Skin Moisturizer

Birgit A. Neudecker, Howard I. Maibach, Robert Stern

The key molecule involved in skin moisture is hyaluronan (hyaluronic acid, HA) with its associated water-of-hydration. Understanding the metabolism of HA, its reactions within skin and the interactions of HA with other skin components will facilitate the ability to modulate skin moisture.

Hyaluronan: Dry Skin and Moisturizers

Robert Stern

Hyaluronan occurs in virtually all vertebrate tissues and fluids, but skin is the largest reservoir of body HA, containing more than 50% of the total. Earlier studies on the distribution of HA in skin, using histolocalization techniques, seriously underestimated HA levels.

Hyaluronic Acid: A Unique Topical Vehicle for the Localized Delivery of Drugs to the Skin

M.B. Brown, S.A. Jones

The presence of HA enables drugs to penetrate the outer skin barrier and then form a reservoir or depot in the epidermis, limiting their systemic absorption. Such localization would be desirable for the topical use of many drugs.

Bioactive Glasses: A Potential New Class of Active Ingredients for Personal Care Products

S. Lee, J. Zimmer, J. Fechner, G.E. Uzunian, L. Song

Recent demonstrations that finely grained powders of bioactive glasses have substantial anti-microbial, anti-inflammatory and mineralizing properties have led to the hypothesis that these may be suited to function as active ingredients for use in a broad variety of cosmetic and personal care products.