Collagen: A Guide to Its Benefits, Types and How to Choose

Your skincare routine may include a cleanser, moisturiser and sunscreen, but skin health is also influenced by nutrition and lifestyle. Collagen is an important protein in the body and a popular ingredient in beauty and wellness products.
What is collagen? How do its types and sources differ? Are collagen supplements suitable for everyone? This simple guide can help you understand collagen and choose products that suit your preferences.
What Is Collagen?
Collagen is a structural protein found throughout the body. It helps support the skin, bones, tendons, ligaments, cartilage and connective tissues.
The body naturally produces collagen using amino acids from dietary protein. Collagen production and renewal change with age, while skin health can also be influenced by factors such as sun exposure, nutrition, smoking and lifestyle.
Although collagen is important to the body’s structure, taking a collagen supplement does not guarantee that it will go directly to the skin or any specific part of the body.
Common Types of Collagen
There are many types of collagen in the body. The types most commonly discussed in supplements include:
- Type I: Abundant in the skin, bones, tendons and ligaments.
- Type II: Found mainly in cartilage.
- Type III: Found in the skin, blood vessels and soft tissues, often alongside Type.
Each type has a different role, but choosing a specific type does not guarantee a targeted result for the tissues where it is found.
What Are Hydrolysed Collagen Peptides?
Hydrolysed collagen is collagen that has been broken down into smaller fragments called collagen peptides. It is commonly used in powders, tablets and drinks, and some products mix easily into liquids.
The body digests collagen into amino acids and small peptides. Some studies have detected collagen-derived peptides in the blood after consumption, but this does not mean the body directs them straight to the skin or joints.
Marine or Bovine Collagen?
Marine collagen is usually sourced from fish, while bovine collagen comes from cattle. Both may be available as hydrolysed collagen peptides.
| Source | General information |
|---|---|
| Marine collagen | Sourced from fish and commonly contains Type I collagen. It is not suitable for people with fish allergies. |
| Bovine collagen | Sourced from cattle and commonly contains Types I and III. Check the product’s source and certifications if you have specific requirements. |
There is not enough evidence to show that one source is better for everyone or is always absorbed more effectively. Your choice may depend on the product’s ingredients and source, as well as your preferences and dietary needs.
What Does the Research Say About Collagen and Skin?
Some studies have examined the effects of specific collagen peptide formulations on skin hydration and elasticity. A few have reported possible modest improvements. However, studies vary in collagen type, dose and duration, and results are not guaranteed. More high-quality research is needed.
There is not enough evidence to conclude that collagen supplements remove wrinkles or reverse signs of ageing. Evidence for their direct effects on hair growth or nail strength is also limited.
Vitamin C and Collagen Formation
Vitamin C contributes to the body’s natural collagen formation. You can find it in foods such as citrus fruits, kiwi, strawberries, bell peppers and broccoli.
Some collagen supplements contain vitamin C. However, taking extra vitamin C has not been shown to improve supplement results in people who already get enough from their diet.
Habits That Support Skin Health
Collagen supplements are not a substitute for daily skincare or a healthy lifestyle. These habits can support your overall well-being:
- Use a broad-spectrum sunscreen and follow its directions.
- Eat a balanced diet that includes protein, vegetables and fruit.
- Drink fluids according to your needs.
- Get enough sleep.
- Follow a skincare routine that suits your skin.
How to Choose a Collagen Supplement
Before buying, consider the following:
- Collagen source: Marine, bovine or another source.
- Ingredients and allergens: Especially if you have a fish allergy or sensitivities to other ingredients.
- Format: Powder, tablets or a ready-to-drink product.
- Amount per serving: Check the product label and directions.
- Product quality: Choose a reputable retailer and check the product information, expiry date and storage instructions.
- Sourcing and certifications: Review any sourcing information or certifications that matter to you.
Selected Collagen Products at Avnzor
Explore collagen products available at Avnzor and choose the format and source that suit your preferences.
NeoCell Liquid Collagen — Pomegranate, 473 ml
A liquid collagen product with pomegranate flavour. Check the product label for its collagen source, type and ingredients.
Vital Proteins Collagen Peptides — Unflavoured, 284 g
A bovine collagen peptide powder containing Types I and III. It can be added to drinks according to the product directions.
Vital Proteins Marine Collagen — Unflavoured, 221 g
A marine collagen powder containing Type I collagen. It contains fish-derived ingredients and is not suitable for people with fish allergies.
Swanson Hydrolysed Collagen Peptides with Vitamin C — 250 Tablets
Tablets that combine collagen peptides with vitamin C. Check the product label for the collagen source and directions for use.
Product availability and ingredients may change. Check the current product information and label before purchasing.
Discover Collagen Products at Avnzor
At Avnzor, we help you discover beauty and wellness products that fit your routine. Explore our available collagen options and choose what suits your preferences and needs.
Free delivery with no minimum order
Discover collagen products at Avnzor
Disclaimer: This article is for general educational purposes only and is not medical advice. Evidence for collagen supplements varies by product and intended use, and results are not guaranteed. Dietary supplements are not intended to diagnose, treat, cure or prevent disease. Review product ingredients, allergens and directions, and consult a healthcare professional before taking supplements, especially if you have a medical condition, take medication, or are pregnant or breastfeeding.






