Hair growth depends on many factors: genetics, hormones, nutrition, stress, and care. In search of thicker, stronger, and healthier hair, many turn to supplements. The most common question is: Should you take collagen or omega-3? Do they have the same effect? And what about biotin, zinc, and selenium?
👉 📈 Nowadays, collagen is hugely popular. Although collagen has existed for a long time, it has only recently gained special attention thanks to new studies, wellness trends, and more intense marketing. So the question is — is it just advertising, or does collagen really work?
Collagen is a natural protein produced by the body and is found in skin, bones, nails, and hair. Its production decreases with age, so supplementation can help.
Strengthens hair follicles
Improves scalp skin elasticity
Supports keratin synthesis (the main component of hair)
May reduce hair loss and contribute to faster growth
Hair may become less brittle, more elastic, and shinier. Growth might speed up slightly, but real results usually appear after 2–3 months of regular use.
Collagen in recommended doses (5–10g daily) is safe and often used continuously for 2–6 months. It is always recommended to consult a doctor or pharmacist before long-term use.
Omega-3 is known for its anti-inflammatory effects and also for improving circulation, so more nutrients reach the hair roots.
Reduces scalp inflammation
Stimulates blood flow and nutrient delivery to follicles
Can help with dandruff, itching, and oily scalp
Hair may appear healthier, less dry, and the scalp more hydrated. Hair growth might improve slightly, but like collagen — the real effects come over time.
Omega-3 can be taken daily but do not exceed the recommended daily dose (usually up to 1000 mg EPA/DHA combined). Consult your doctor or pharmacist, especially if you take other medications, particularly blood thinners.
Important: If you use omega supplements, choose pure omega-3, not a 3-6-9 combination.
No, they do not work the same — but they can work together.
Collagen directly affects hair quality — nourishing hair structure from within and stimulating keratin production.
Omega-3 does not directly affect the hair strand but improves the conditions for growth — a healthy scalp, better circulation, and less skin inflammation.
📌 That’s why a combination of these two supplements is often recommended — especially if you are dealing with hair loss and dry/irritated scalp.
These three micronutrients are also important for healthy hair and are often found in hair supplements.
Biotin (Vitamin B7) — speeds up hair growth, strengthens strands, prevents breakage
Zinc — balances sebaceous gland function, protects follicles, supports tissue regeneration
Selenium — antioxidant that protects follicles from damage and stress
✅ Time for effects?
Most people see the first signs of improvement after 3–6 weeks of regular intake.
🕒 Note: Biotin, zinc, and selenium are usually taken in smaller doses, but the rule still applies — before starting supplementation, especially long-term, consult a specialist.
Collagen naturally occurs in bone broths, chicken skin, fish skin, and gelatin, but the body must break it down before using it, so the effect is slower. Foods rich in vitamin C, zinc, and amino acids (eggs, meat) support collagen synthesis.
Hydrolyzed collagen supplements contain peptides that the body easily absorbs and uses faster.
For the body to produce collagen better, it is necessary to consume nutrients such as:
Vitamin C (peppers, citrus fruits)
Zinc (meat, pumpkin seeds)
Copper (nuts)
Amino acids proline and glycine (meat broths, eggs)
Biotin does not increase appetite but helps hair health and metabolism.
Zinc can improve appetite only if there is a deficiency.
Interestingly, zinc can affect appetite mostly in cases where there was a zinc deficiency. Supplementation can improve appetite and taste. If you are not deficient, it likely will not have a significant effect on hunger.
Selenium and omega-3 do not have a significant effect on hunger.
Collagen does not affect appetite but supports skin and joints.
Conclusion: Among these supplements, only zinc can indirectly increase appetite, but only in case of deficiency. The others serve exclusively for hair and skin health.
This guide was compiled by the EasyDailyThings Editorial Team.
Our content integrates practical real-world experience and is validated using analytical methodologies to ensure every tip offers a safe, time-saving, and effective solution for your daily life.
✅ Crux collagen – 1 sachet daily
✅ Vitamin C – helps collagen synthesis, use together with collagen
➕ Omega-3 (EPA/DHA) – anti-inflammatory and hormone support, 1000–2000 mg daily
➕ Biotin + zinc – additional support, especially for hair loss
If you are interested in how to reduce hair loss externally after childbirth, be sure to read our special article on that topic! Click here.
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