The invention relates to a skin compactness composition which comprises hyaluronic acid, hydrolyzed collagen, dipalmitoyl hydroxyproline, compound amino acid, decarboxylation peptide, acetyl hexapeptide, plankton extracts, lactic acid bacillus/soybean milk fermentation product filtrate, dipotassium glycyrrhizinate, retinyl palmitate, VE and hydrolyzed sesame protein. By the aid of anti-aging vitamin, amino acid, derivatives and peptides, an extracellular matrix structure matrix is endogenously improved, the dipalmitoyl hydroxyproline, palmityl glycine, the decarboxylation peptide, the acetyl hexapeptide, sodium hyaluronate, retinol, the hydrolyzed collagen, the plankton extracts, the lactic acid bacillus/soybean milk fermentation product filtrate and the dipotassium glycyrrhizinate serve as main components, thin wrinkles caused by skin laxity are comprehensively repaired, metalloprotease activity is inhibited by promoting collagen and elastin synthesis, skin compactness and elasticity are improved, and young skins are restored.