Hair Science ✦
Trusted knowledge for healthier hair.
Evidence-aware guides informed by dermatology research, cosmetic science and professional hair-care knowledge — so you can make more informed choices for your hair.
Explore Hair Science topics
Myths & Facts
Popular hair claims, and what the available evidence actually supports.
Myth: Trimming Makes Hair Grow Faster
Trimming can't change growth rate — but it can change how much length you keep.
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Myth: Biotin Grows Everyone's Hair
Biotin deficiency can affect hair. Correcting a deficiency you don't have is a different proposition.
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Myth: Protective Styles Always Protect
A style is protective when it reduces manipulation without adding tension. Both halves matter.
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Myth: Silicones Are Bad for All Hair
Silicones vary widely, and the buildup question is about your routine as much as the ingredient.
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Myth: The Float Test Measures Porosity
The float test is confounded by too many variables to tell you anything reliable.
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Myth: Natural Ingredients Are Always Safer
Plant-derived doesn't mean gentle, and synthetic doesn't mean harsh.
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Myth: Rosemary Oil Is Proven to Regrow Hair
There is real human research, but it's small, narrow, and not the settled evidence the internet implies.
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Myth: If Braids Hurt, They're Working
Pain is a warning signal, not evidence of a good install.
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Hair Science teaches the principles. Hairavie applies them to your hair.
Evidence-aware
Based on credible research and professional knowledge.
Credible sources
See the evidence behind important claims.
Always transparent
We show what's known, what's uncertain and where to learn more.
How Hairavie handles evidence
Your pattern isn't your whole hair profile
Pattern, porosity, strand thickness, density, scalp behaviour, chemical history and climate are separate readings — and Hairavie is explicit about which actually influence a Hair Match.
Ingredients aren't good or bad in isolation
A silicone can mean slip, shine and less friction. Whether it suits you depends on the formula and your routine. Hairavie analyses formulas, never fear lists.
Missing data lowers confidence, never invents certainty
Ingredient lists don't reveal concentrations. When formula data is incomplete, Hairavie says so instead of pretending to be sure.
Hairavie provides cosmetic hair-care education only. It does not diagnose or treat medical or scalp conditions. If symptoms persist or you're concerned about hair loss or scalp health, consult a qualified healthcare professional.