Why Your Curls Change After 40

For years, the curly hair community has been told that moisture is the answer to every problem. Dry curls? Frizz? More moisture, moisture, moisture. 

For those of us in the 35–60 age bracket, we’ve started to notice that moisture alone isn’t cutting it anymore. Our curls are losing their "bounce," thinning at the roots, or becoming wiry and resistant to styling.

The reason for this change isn't dryness; it’s biology. As we age, our body’s natural production of keratin (the protein that makes up 90% of your hair) slows down. Compounded by years of colour treatments and/or hormonal shifts, the internal structure that hold our curl patterns together begins to weaken and break. Whether you're embracing the grey or colouring your hair, these biological changes will happen.

We love recommending products with protein for our gorgeous silver curlies. Protein in your hair products helps strengthen your hair, filling in the chips and cracks created with colouring and heat styling, or sinking deeper into the cortex of the hair to work from the inside out.

Recommended Proteins for Transitioning Curls

Your hair needs internal support and structure as it starts to transition to grey or silver. This comes in two forms: internal and external.

For internal treatment, peptides are tiny fragments of proteins. Because they are microscopically small, they don’t just sit on the surface; they travel inside the hair shaft. Once there, they act as cellular messengers, instructing your hair to repair itself and reconnecting the broken structures at a molecular level. One of the most common peptides we see in hair care are pea peptides.

Other kinds of protein include keratin, amino acids, wheat, rice, and oat, to name a few. These proteins are larger and act like plaster on a wall - they cover and fill chips, cracks, and other damage, making hair more manageable and smoother. 

Depending on the level of damage your hair has, you'll likely discover that your hair can be bouncier, fuller, and softer than you've realized, even if it's feeling wiry and coarse as it is transitioning to grey. All it takes is some protein!

The Benefits of Protein

When you switch from heavy moisturizers and focus on supporting the structure of your hair, the transformation is visible:

• Structural Spring: Curls that felt "limp" have their elasticity back.

• Gray Hair Softening: Proteins help smooth the cuticle of silver strands, making them soft and manageable instead of wiry.

• Increased Moisture Retention: Curly hair still needs moisture - it's just not the answer to our specific curl issues that come with age and hormone-related changes. Proteins  prevent transepidermal water loss by filling in the cracks in the hair's cuticle, keeping water from evaporating out of the hair as quickly. At a molecular level, peptides are chains of amino acids. Many of these amino acids are natural humectants, meaning they have a chemical attraction to water, bringing it into and keeping it in your hair.

Your "Protein-Powered" Options for 2026

Ready to upgrade your transitioning curls? Here are the products we recommend to bring the bounce back:

1. Daily Reinforcement: AG Care Curl Revive Shampoo & Innersense Organic Beauty Hair Renew Soothing Conditioner

Enriched with Pea Peptides, AG's Curl Revive Shampoo strengthens the hair every time you wash. It provides "micro-strength" that prevents the breakage often seen in thinning hair, without the risk of protein overload. Innersense's Hair Renew Soothing Conditioner calms the microbiome of your scalp like high-end skincare. Pea peptides and niacinamide fortify your curls from the root to the tip.

2. The Leave-in Treatment: K18 Leave-In Molecular Repair Mask

The gold standard for restoring youthful elasticity to aging curls. Used frequently, the K18 Leave-in Molecular Repair Mask can make a huge difference to how your hair acts and looks. Apply as directed - don't rinse it out! - and then continue with your routine. 

Check out our Peptide Power Bundle below: it features all three of these products to add the benefits of peptides to your wash day.

Bonus: The Supercharger: Ecoslay Matcha Boost

Damaged, dry, brittle.... Sound familiar? Ecoslay's Matcha Boost Protein Treatment is the weekly or bi-weekly boost your curls need to bring back - and keep! - that beautiful bounce. Follow it up with a deep conditioner for soft, structured curls.

The Verdict

You don’t need to make sweeping changes to your existing wash day; you need a smarter routine that supports your hair in this stage of its life. By changing some of your products out for formulas that contain protein, including peptides, you’re rebuilding your curls from the inside out rather than just damage.

See how great your curls could look in as little as 30 days. Grab our Peptide Power Bundle today and get free shipping across Canada. Use the products on their own or alongside your other curl favourites for gorgeous, lasting results.