The Benefits of Glycine for Hair
In a market populated by a myriad of ingredients, it can be difficult to know which products are beneficial for your hair’s specific needs and how to incorporate them into your hair care routine. Though it may be a lesser-known ingredient, glycine in hair products can help strengthen and nourish damaged strands in need of repair. To understand how glycine works, we’ve consulted hair care specialists Kérastase to share their insights on the benefits of glycine for hair and the scalp.
What is glycine in hair products?
Glycine is the smallest, simplest amino acid and is naturally produced in the body.1It is also found in a number of high-protein foods including legumes, fish, dairy products and meat. 2Since the body uses glycine for protein creation2, this amino acid has become popular in a range of hair care products to foster an ideal environment for stronger hair. There are many benefits of glycine for hair - if hair has been bleached or colour-treated since it can help limit oxidative stress and eliminate calcium buildup on the hair and scalp.
1https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10379184/
2https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5350494/
Is glycine good for hair?
There are a number of internal and external factors that can impact the quality of your hair – oxidative stress is one of them. This can occur in the body when there is an imbalance of antioxidants and damaging free radicals. Oxidative stress is usually discussed in relation to skin and ageing, but it can also cause hair fall, and affect the density of hair that emerges from the scalp. 3Glycine acts an antioxidant, helping to curb oxidative stress that can lead to premature hair fall. In addition to helping stimulating hair growth, there are many advantages to using glycine to improve the overall quality and appearance of your hair. Glycine benefits for hair include:
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• Deeply conditioning the hair
• Repairing damaged hair
• Preventing coarse, split ends and breakage
• Boosting strength and shine
• Helping hair feel smooth and silky soft
3https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6369642/
Hair concerns that benefit from glycine
With so many caring properties, glycine in hair products can be used to target a number of common hair concerns such as dryness, brittleness and dullness. While there could be a number of reasons why your hair may be dry, lacklustre and prone to breakage, it is often a result of:
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• excessive heat styling
• chemical processing
• continual exposure to hard water
• too frequent washing
• excessively hot showers
• improper hair treatments
• exposure to harsh climates
Keratin (the structural protein of hair fibres) gives the hair its strength, gloss and smooth texture. Glycine plays a vital role in the creation of keratin, so in the right conditions, it can penetrate the hair fibre and reconnect broken keratin links. This strengthens the hair’s internal structure to help stop unnecessary hair shedding caused by breakage and boost the hair’s overall health and shine.
How to nurture hair with glycine
To enjoy the benefits of glycine for hair health, we recommend curating your hair care routine with our glycine-rich Première collection – suitable for all types of damaged hair. Première is infused with 8% pure acids concentration: 3% citric acid to decalcify the hair and 5% glycine to repair. Your Première hair care approach can be broken down into three complementary stages:
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1. Activate and cleanse with pre-shampoo treatment and shampoo.
2. Treat your hair with conditioner and hair mask.
3. Finish your hair regime with serum and oil.
1. Pre-Shampoo Treatment And Shampoo
Pre-shampoo: Start your hair care routine by applying Première Concentré Décalcifiant Ultra-Réparateur to wet lengths. Massage throughout and leave on for 5 minutes. This pre-shampoo treatment helps recreate 99% of hair’s original strength* and helps to remove stiffness and dullness.
Shampoo: Next, layer Première Bain Décalcifiant Rénovateur onto wet hair. Massage and emulsify, then rinse thoroughly. This sulphate-free formula gently cleanses the scalp while removing calcium buildup, helping to manage breakage, dullness, and repair hair at the core. Hair is 93% stronger 75% shiner hair and twice as smooth*.*
*Instrumental test after application of the Concentré Décalcifiant Ultra-Réparateur
**Instrumental test after application of Bain Décalcifiant Rénovateur
2. Conditioner and Hair Mask
Conditioner: As we move onto the treatment stage of your glycine hair products, apply Première Fondant Fluidité Réparateur to towel-dried hair, ensuring you massage through your lengths and ends. Leave on for 3 to 5 minutes, then rinse. This lightweight, anti-rigidity formula imbues locks with +86% more moisture* and 82% more shine**.Enjoy the feel of softer, smoother, more supple hair.
Hair mask: After conditioning, apply Première Masque Filler Réparateur through your length and ends to revive your tresses. Leave on for 5 minutes, then rinse. Relish the look and feel of stronger hair with 98% less breakage*** and with 53% more shine****.
*Instrumental test after application of the Bain Décalcifiant Rénovateur + Fondant Fluidité RÉPARATEUR***Instrumental test after application of the Bain Décalcifiant Rénovateur + Fondant Fluidité Réparateur
***Instrumental test after application of the Masque Filler Réparateur + Bain Décalcifiant
****Instrumental test after application of the Masque Filler Réparateur
3. Serum and Oil
Serum: Now that you have activated, cleansed and treated your hair, enjoy the benefits of glycine in your finishing treatments. You can apply Première Sérum Filler Fondamental to towel-dried hair and leave in. This repairing anti-frizz serum is formulated to repel humidity, nourish locks and minimise frizz for up to 72 hours*. This product protects hair from damage and heat up to 230°C*, so you can blow-dry and heat style as normal.
Oil: Première Huile Gloss Réparatrice can be applied to either dry or damp hair to deliver intensive shine to dull, damaged strands and reduce split ends by up to 92%**. Leave in, and style hair as desired.
*Instrumental test after 1 application of the Sérum Filler Fondamental
**Instrumental test after application of the Huile Gloss Réparatrice
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