Growing attention is turning to the role that collagen may play in hair and scalp health.
Hair is made almost entirely of keratin, and keratin needs amino acids to form – the same amino acids collagen supplies. This is why the experts at Dercos formulated it into our new collection of Collagen Filler 17 Ultra-Repairing hair care: to help support stronger, more resilient hair fibres.
Read on to find out which collagen is best for hair, and how to build it into a routine that targets brittleness, breakage, and reduced visible density.
What is collagen for hair?
Collagen is one of your body's most abundant structural proteins – best known for the role it plays in skin, joints and connective tissue. But collagen is also important for hair, because it's a source of amino acids. Amino acids are the building blocks your body uses to form keratin: the protein that makes up your hair fibre and that gives it its strength.
In other words, collagen doesn't build hair directly. It feeds the process that does.
This is where the "collagen for hair" conversation tends to get confusing, because there are three very different things being talked about under the same name:
- Ingestible collagen – supplements or powders taken orally
- Collagen
peptides – broken-down collagen molecules, small enough to be more easily absorbed,
often found in both ingestible and topical products
- Topical collagen-supporting hair care – products applied directly to hair and scalp, formulated with collagen-derived or collagen-supporting ingredients
What does collagen do for hair?
At a fibre level, how hair looks and feels is closely linked to its protein structure, and collagen can play a supporting role. This is particularly relevant for lengths weakened by heat styling, colour treatments or friction, as collagen can help strengthen the hair fibre and improve resilience.
The scalp matters too. Keeping it in good condition helps create a healthy environment for hair, which is why collagen-focused routines often include a scalp treatment or massage step alongside care for the lengths.
5 collagen benefits for hair
So, what does collagen do for hair? By supporting the strength and resilience of the hair fibre, using collagen for hair care can help:
- Hydrate dry ends
- Reduce hair breakage
- Balance the scalp microbiome
- Create volume and fuller-looking hair
- Soften the look and feel of brittleness
Is collagen good for hair?
Yes – particularly if you're dealing with hair that feels damaged, fragile, or prone to hair fall from breakage. But collagen isn't a stand-alone fix. It works best as one part of a fuller routine that also accounts for cleansing, conditioning, scalp balance, nutrition, and styling habits. Think of it as reinforcement – not replacement.
How to use collagen-supporting hair care
Our Collagen Filler 17 Ultra-Repairing system is formulated to target 17 visible signs of hair damage. Enriched with pro-collagen peptides and citric acid, it works at the heart of the fibre to help improve the look of damage and prevent hair breakage.
Below, we explain how to use it to bring the benefits of collagen into your hair care routine.
Step 1: Pre-shampoo treatment
On wet hair, apply the Collagen Filler 17 Ultra-Repairing Treatment to hair and scalp. Take the time here – massage it in gently, using circular motions to really work the treatment into the scalp. This step supports the scalp environment and helps deliver a boost in visible hair density. Leave on for five minutes, then rinse thoroughly.
Step 2: Shampoo
Follow with our Collagen Filler 17 Ultra-Repairing Shampoo, applied directly to the scalp. The sulfate- and silicone-free formula gently lifts away scalp buildup while adding weightless volume. Massage into the scalp until it foams, then rinse.
Step 3: Condition
Finish with the Collagen Filler 17 Ultra-Repairing Conditioner through your mid-lengths and ends. It nourishes, detangles, and boosts hydration for a silky-smooth finish, while helping prevent split ends from traveling up. Leave on for five minutes to let it absorb into the hair fibre.
Now you know about the benefits of collagen for hair. Next learn about how ceramides are good for hair, and how they can help prevent and manage dryness from creeping in.
