Collagen is the most abundant protein in the body, and a major part of the structure of your skin. It is also one of the most talked-about words in beauty. Let us separate what is well established from what is marketing.
What collagen does
In the deeper layer of skin, the dermis, collagen forms a supportive network that gives skin its strength and firmness. Elastin works alongside it to let skin spring back into shape.
Why it declines
- Time: the body gradually produces less collagen from our twenties onwards, and existing collagen fibres become more fragmented.
- Sun exposure: UV light breaks down collagen. It is the biggest external factor.
- Smoking: linked to faster collagen breakdown.
- Hormonal changes: skin collagen content falls more quickly around and after menopause.
Myths and facts
"Collagen creams replace the collagen in your skin."
Collagen molecules are too large to pass into the deeper layers of skin when applied on top. Creams that contain collagen can still moisturise the surface, but they do not rebuild the dermis.
"Collagen supplements are proven to work."
Research on swallowed collagen peptides is ongoing, and results are mixed. Some studies report modest effects on skin hydration, but quality varies and many are funded by manufacturers. If you are curious, talk to your doctor or pharmacist.
"Face massage makes collagen."
We do not make this claim. Massage and face exercise are a pleasant, relaxing ritual, and we cannot promise any effect on collagen or on skin firmness.
"Sunscreen protects collagen."
This one has solid support. Because UV breaks down collagen, daily protection is one of the best things you can do. See Sunscreen 101.
Habits that support your skin
- Daily broad-spectrum sunscreen.
- No smoking.
- A balanced diet with enough protein and plenty of fruit and vegetables.
- Good sleep and stress management.
- A gentle, consistent routine. See How Skin and Face Change With Age.
Dermatologists can also discuss in-clinic and prescription options, such as retinoids, which have the strongest evidence among topical ingredients.
The takeaway: be sceptical of big collagen promises. Protect your skin, live well, and enjoy your ritual for what it is.
This article is for general information and does not replace medical advice.
