Across your entire routine — from makeup to moisturisers — you want to ensure you're treating mature skin to a wave of plumping and hydrating ingredients, says Geeta Yadav, MD, board-certified dermatologist and founder of Facet Dermatology. “Retinoids and peptides stimulate collagen production and improve skin cell turnover and elasticity,” notes Dr Alia Ahmed, consultant dermatologist and expert in psychodermatology. This is what makes skin look like it's sagging, but simply adding collagen creams to your routine might prove futile, as collagen isn't easily absorbed by the skin.