Skincare by age: your 30s, 40s and 50s

Collagen production begins to decline gradually from the late twenties. Sebum and lipid production fall with age as well, the barrier weakens, and skin becomes more sensitive to dryness and outside irritants.

Three factors drive most age-related change: ultraviolet exposure, which is widely estimated to account for the large majority of visible facial ageing, hormonal shifts, particularly around perimenopause and menopause, and the natural slowing of collagen turnover. For most people the first two matter more than genetics.

The encouraging part: the core principles work at every age. Sun protection, hydration and one well-chosen active beat any elaborate ten-step routine.

What changes

The first visible changes are usually subtle: slightly more dryness, a tired look that takes longer to shake off, occasional fine lines around the eyes, post-blemish marks that fade more slowly. Structurally, skin still produces healthy collagen, just at a slower pace.

Priority one is daily sun protection. SPF 30 or higher every day, whatever the weather. Sunscreen skipped in your thirties shows up in your forties, and it is the one measure with real evidence behind long-term prevention.

Priority two is introducing retinol. Your thirties are a sensible time to start, from around 0.25 percent two or three times a week. Retinol works preventively rather than reactively.

Priority three is a vitamin C antioxidant in the morning under sunscreen, which supports UV defence and contributes to collagen synthesis.

What to avoid: too many actives at once, exfoliating more than twice a week, and rich anti-wrinkle creams formulated for much older skin, which can be heavy and cause congestion.

What changes

The forties bring the first hormonal shifts of perimenopause. Oestrogen, which supports collagen synthesis and moisture retention, begins to fluctuate and gradually decline. For many women this is the decade of the fastest visible change.

Typically that means reduced elasticity, the first lines that stay put when the face is at rest, more pronounced dryness, particularly seasonally, first pigment marks from accumulated sun exposure, and visible change on the neck and chest, areas that usually get only the leftovers of facial care.

Priority one is strengthening the retinol step. If you already use it, move up steadily. If you have not started, start now rather than waiting.

Priority two is the neck, chest and hands. A dedicated neck cream is not essential, but daily sun protection and a light moisturiser on those areas are.

Priority three is peptides alongside retinol, which build a cumulative effect over three to six months. Priority four is richer overnight hydration, since falling sebum means skin needs more support from outside. Emollients such as squalane and ceramides become genuinely useful here.

What changes

In the fifties, menopause is the central event for skin. Low oestrogen leads to structural change: skin thins, and a substantial share of its collagen is lost in the first years after menopause. Barrier function weakens noticeably.

In practice that means thinner skin that is less protected against minor injury, a barrier that lets products sting which never used to, reduced moisture retention, more visible capillaries and pigment marks that are more established. It also means loss of volume, which moisturisers cannot address and which is a question for a specialist rather than for cosmetics.

Priority one is barrier repair: ceramides, cholesterol and fatty acids together, since the combination works better than ceramides alone.

Priority two is continuing retinol, but more gently. A lower concentration used consistently is better than a higher one your skin cannot tolerate.

Priority three is richer textures and, if the air is dry, help from a humidifier. Priority four is sun protection, which matters as much at seventy as at thirty, because pigmentation and barrier strain continue regardless of age.

Sun protection every day. Cleansing that does not leave skin tight. One active you use consistently rather than three you rotate at random. Enough patience to judge a product over months rather than weeks.

Age changes the emphasis, not the fundamentals. A thirty-year-old and a sixty-year-old need the same foundation; what differs is the texture, the pace of introducing actives and how much barrier support the skin asks for.

If a mole changes size, shape or colour, has an irregular edge, bleeds or does not heal. If a patch of skin does not heal within a few weeks. If redness, itching or flaking is persistent and does not respond to gentle care.

Hormonal changes around menopause can also affect skin in ways cosmetics do not address. If skin change is accompanied by other symptoms that concern you, that is a conversation with your doctor rather than a reason to buy another cream.