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Long story short, a healthy scalp leads to healthy hair, says trichologistKerry Yates.

Kevin Santiago Wipfler
Yes, peptides can actually support healthy hair growth, though there are some caveats.
But hair growthand hair lossare complex, and peptides alone may not be your answer to stronger strands.
Peptides support active follicles only, Yates reminds us.

What types of peptides promote hair growth?
Would you ever go days and days without washing your face?
You wouldnt, because the results would be horrific, she says.

But that is what you do when you fail to wash your hair.
This helps promote blood flow (great for promoting hair growth!)
and ensures all product, excess sebum, and dead skin cells are removed.

Youll want to apply it once your hair is clean and dry, possibly after dermarolling your scalp.
This can be helpful for penetration, says Dr. Mian.
Increasing circulation as you massage will not only improve distribution, but increase absorption.

Covering the head in plastic adds warmth to further promote scalp circulation, explains Dr. Kahn.
What to Consider When Buying Peptides for Hair Growth
First, consider the format.
Then, examine the ingredients.

The best products will contain a blend of peptides, says Dr. Mian.
Good scalp health leads to perfect follicle fitness, which provides support for hair growth, says Yates.
Kahn recommends caffeine and peppermint, both of which have invigorating properties that can stimulate blood circulation.
Lastly, ensure the product is one you like enough to use daily.
Consistency is key as it can take several weeks to months to see results, Kahn reminds us.