If you have 6 months

Rest assured, it’s normal for hair to become less full as we get older. What is less noticeable is that our individual hair strands also shrink in diameter with age. Nioxin Diaboost Xtrafusion Treatment, £50.60, lookfantastic.com, treats this aspect by increasing the thickness of each strand. It’s loaded with skincare-inspired ingredients such as caffeine and niacinamide that protect against breakage and thicken hair at the root. Apply it directly to the scalp every day and you should see the full benefits within three to six months.