Cellex-C Age Less 15 Skin Signalling Serum is the best way to effectively maintain the elasticity of the skin. This product’s innovative technology provides signals for early aging signs and anti-aging solutions. The serum’s consistency yields improved penetration of the formula into the deepest layers of the skin to rectify the problems at the root. This product has no allergy or other skin-related side effects. This product is suitable for all skin types.