Whatever your age the basic principles of skincare are the same, what's really important is to repair your skin barrier. A lot of damage is caused by environmental stress like too much sun exposure, city pollution, poor diet, stress, and dehydration. Often we don't pay enough attention to cleansing and effective exfoliation, relying on harsh foaming chemicals instead of the more gentle oil-based cleansers.
Using too many serums in your 20's means you may overstimulate your skin and increase inflammation. Your skin is much more resilient when younger because your body can more easily absorb the nutrients that keep it healthy. You really won't need a multitude of topical products as long as you have a good diet. From your mid-20s onwards using an antioxidant serum can help counteract environmental damage from pollution and UV rays.
By the time we reach our 30's all the vitamins and minerals, antioxidants like CoQ10, collagen, elastin, and the hyaluronic acid levels in the body begin to drop. Hyaluronic acid is a naturally-occurring substance in our skin and is known for its capacity to attract and hold up to 1,000x its weight in water.
Using skin care products formulated for the 40+ age group while in your 30s can actually help to preserve the collagen, elasticity, and hyaluronic acid responsible for plumper more dewy-looking skin. Your skin will simply absorb what it needs from these products.
Oestrogen helps your skin stay soft and smooth but it starts to decline as you approach your 40's and 50's. Skin generally becomes drier as the levels of natural oil in the skin begin to fall. And because your body absorbs vitamins and minerals less efficiently it means the skin receives fewer nutrients. Around this age you may need a little extra help from products containing ingredients that help to repair and restore skin cells, such as antioxidants, fatty acids and emollients in botanical oils.
20s: Use an Antioxidant serum. Towards your late 20s also use a hydrating hyaluronic acid formula in an eye cream for moisture.
30s: Use a gentle exfoliant once or twice a week to stimulate skin cell renewal. Follow with an antioxidant oil serum.
40s: Add a hyaluronic acid serum to your skincare ritual (it absorbs up to 1000 times its own weight in water for extra dewiness).
50s: Make sure your skincare products include antioxidants, and peptides (amino acids, or proteins) to promote collagen and elastin regeneration.