Filling Spheres™ - an advanced ingredient blend that combines sodium hyaluronate and konjac root to instantly hydrate and increase lip volume without irritation. The dehydrated microspheres remain stable in an anhydrous base until they interact with water in the lips. Their dehydrated state allows them to penetrate the epidermis, and once they come into contact with water, they swell and draw moisture from the dermis to the upper layers of skin in the lips, creating an instant lip-plumping effect.

Palmitoyl Tripeptide-38 and Portulaca Pilosa Extract - a collagen-stimulating peptide and botanical blend that instigates the synthesis of multiple extracellular matrix proteins to minimize the appearance of fine lines and wrinkles while increasing lip volume.

Palmitoyl Tripeptide-1 - a peptide that helps increase collagen and GAG production to moisturize and increase lip volume.

Tocopherol (Vitamin E) -  a fat-soluble antioxidant vitamin and emollient ingredient.

PCA Skin Hyaluronic Acid Lip Booster Full ingredient list:
Hydrogenated Polyisobutene, Ethylene/Propylene/Styrene Copolymer, Beeswax, Ethylhexyl Palmitate, Cetearyl Ethylhexanoate, Tocopherol, Tribehenin, Flavor, Ricinus Communis (Castor) Seed Oil, Sorbitan Isostearate, Sodium Saccharin, Portulaca Pilosa Extract, Butylene/Ethylene/Styrene Copolymer, BHT, Trihydroxystearin, Sucrose Cocoate, Sodium Hyaluronate, Palmitoyl Tripeptide-1, Palmitoyl Tripeptide-38, Amorphophallus Konjac Root Powder