What Is Collagen?
Collagen is a protein that forms the building blocks of hair, skin, and nails. As we age, natural collagen production declines, leading to weaker strands and slower growth.
How Collagen Supports Hair Growth
Collagen provides amino acids needed to build keratin—the primary structural protein in hair. It also improves scalp elasticity and blood circulation. A 2023 clinical trial in the Journal of Nutritional Dermatology found that participants taking marine collagen daily saw increased hair thickness and reduced shedding after 90 days.
Best Types of Collagen for Hair
Marine collagen (Type I) is most bioavailable, while bovine collagen (Types I & III) supports general skin and hair health. Look for hydrolyzed formulas for better absorption.
Dosage and Use
Most dermatologists recommend 5–10 grams daily, preferably with vitamin C to support synthesis. Consistent use over three months is required for visible changes.
Expert Tip
Dr. Laila Monroe says, “Collagen isn’t a miracle cure but an excellent foundation for stronger, shinier hair when combined with balanced nutrition.”
