Last updated July 2026 · 7 minute read
The short answer. Collagen is the main structural protein in skin, giving it firmness and elasticity. From your mid 20s your natural collagen slows, which shows as fine lines and less bounce. Many women take a daily hydrolysed marine collagen to support skin from within, alongside vitamin C, which contributes to normal collagen formation for the normal function of skin.
Why your skin needs collagen
Around 70% of the dermis, the deeper layer of your skin, is collagen. It forms the scaffold that keeps skin plump, smooth and firm. When collagen is plentiful, skin bounces back quickly. As it declines, that structure softens.
What changes as collagen falls
From your mid 20s collagen production slows by roughly 1% a year. The visible signs build gradually: fine lines, drier skin, and a loss of firmness along the jaw and cheeks. Sun exposure, smoking, stress and broken sleep speed it up, and around menopause the fall steepens as oestrogen declines.
How a collagen supplement supports skin
Hydrolysed marine collagen is broken into small peptides your body absorbs and distributes, including to the skin. It is naturally rich in Type 1 collagen, the type most abundant in skin, which is why marine collagen is such a popular choice. Pairing it with vitamin C matters, because vitamin C contributes to normal collagen formation for the normal function of skin. These are food supplements, so the honest framing is support rather than a cure, and results are gradual.
Eternal Collagen: 15,000mg in one daily cap
Hydrolysed marine collagen, enriched with 19 essential vitamins and minerals, in a tropical flavour that mixes easily into water, juice or a smoothie. One 25ml cap a day, made in the UK.
How long until you see skin results
Skin renews slowly, so patience pays. Most women notice their skin feeling more hydrated first, with gradual changes to firmness between weeks 6 and 12 of daily use. Collagen is cumulative, so the habit is what delivers.
How to get the best results for your skin
- Take your daily cap consistently, tied to your morning routine
- Wear SPF daily, since sun is the biggest driver of collagen loss
- Prioritise sleep and protein, the raw materials your skin works with
- Give it a full 8 to 12 weeks before judging
Frequently asked questions
Does collagen help your skin?
Many women take collagen to support skin firmness and hydration. Hydrolysed marine collagen is absorbed as peptides, and vitamin C alongside it contributes to normal collagen formation for the normal function of skin. Results are gradual, not overnight.
How long does collagen take to work on skin?
Most women notice skin feeling more hydrated first, with gradual firmness changes between weeks 6 and 12 of consistent daily use.
What is the best collagen for skin?
A high strength hydrolysed marine collagen, rich in Type 1 collagen and paired with vitamin C. Eternal Collagen provides 15,000mg with 19 vitamins and minerals in one daily cap.
Can collagen reduce wrinkles?
Collagen supplements may support skin firmness and hydration over time, which many women find softens the look of fine lines. They are food supplements, not a medical treatment, so claims of removing wrinkles should be treated with caution.