The invention disciosed in this application relates to a novel synergistic transparent / translucent hydrogel composition capable of making it into hydrogel sheet / film usefui for cosmetic and / or medical purposes having excellent skin adhesion, which comprises (i) any one of the gellable Polysaccharide which do not form elastic gels and / or polymer & copoiymer of acrylic acid / acrylate esters, and (ii) kappa carrageenan (a gellable Polysaccharide) the pH of the above said compositions being in the rnge of 3 to 12 This invention also relates to a method of preparing the novel synergistic hydrogel composition , a translucent / transparent hydrogel sheet / film and a method of preparing the said sheet/film
