Hollister Karaya Powder 2-1/2 oz Hollister Karaya Powder creates a sticky gel around irritated skin with all natural Karaya hydrocolloid. Protects raw and weeping skin by creating a sticky gel. Karaya, a natural hydrocolloid, has unique skin care properties. Use sparingly to absorb moisture or exudates from skin prior to placing a skin barrier on peristomal skin.