article_snippet: Kerastase has invented Kerastase first youth activator serum, Densifique Serum Jeunesse (£49, kerastase.co.uk).
article_snippet: The Trevor Sorbie Rejuvenate range has a collagen and peptide complex to repair and strengthen.
article_snippet: Lotil (from £3.59, Boots)
article_snippet: Lotil (from £3.59, Boots) is such a useful, versatile skin product.