The present invention relates to the use of γ-polyglutamic acid (γ-PGA, H form), and/or one or more of its salts (i.e., γ-polyglutamate in Na+ form, γ-polyglutamate in K+ form, γ-polyglutamate in NH4+ form, γ-polyglutamate in Mg++ form, γ-polyglutamate in Ca++ form) and/or γ-polyglutamate hydrogel as super moisturizer(s) in cosmetic products and personal care products.