Dupe culture is everywhere, and that's great for lip gloss. When it comes to keratin treatments, a suspiciously cheap option can come with a hidden cost: formaldehyde.
Why some keratin is cheap
Classic straightening formulas get their dramatic results from formaldehyde or chemicals that release formaldehyde when heated. It's cheap and effective, but the fumes can irritate your eyes, nose and lungs.
Label red flags
- Formaldehyde, formalin, methylene glycol: all basically the same thing once heated.
- Glyoxylic acid in high amounts: can be harsh on color-treated hair.
- Vague claims: "Formaldehyde-free*" with an asterisk and no ingredient list is a no.
- No brand info: no ingredients, no country, no contact? Skip it.
What to look for instead
Look for a full INCI list, smoothing actives such as tannins, amino acids and plant oils, and clear aftercare steps. Our Tanino Keratin Treatment uses plant tannins to smooth and add shine without formaldehyde. Want something quicker? The One Step Keratin Smoothing Mask is beginner-friendly.
Protect your results
Whatever you choose, wash with a sulfate-free formula like our After Care Shampoo & Conditioner so your smoothness lasts longer.
A real glow-up is one you can feel good about: read the label first, then flip your hair.
