Last Updated on June 10, 2026 by omgbart
My hair had been taking a beating. Less heat styling, more air drying, and somehow it still looked drier and frizzier than it had in years. My usual leave-ins were holding the line but not winning it. No shade to my longtime favorites, Kerastase Nutritive Styling Cream and Rene Furterer Absolue Kératine Ultimate Repairing Serum, but thick hair like mine wants more on a hot summer day. So I went looking.
I'd been ignoring the Olaplex noise for years. The raves were everywhere and I stayed put, mostly because I was happy with my routine. A bottle of No.3 once landed in a gift bag and left me cold. Wetting the hair, applying, waiting, then rinsing in the shower again felt like too much production for a Tuesday. My expectations for No.6 were low. They did not stay low.
What is Olaplex No.6 Bond Smoother?
No.6 is a leave-in styling cream built around Olaplex's patented bond-building technology, which the brand says repairs the broken bonds that chemical, heat, and mechanical damage leave behind. The current formula promises frizz control for up to 72 hours and heat protection to 450°F. It's vegan, color-safe, and made without sulfates, parabens, or phthalates. I still think of hair as dead protein, so I won't referee the molecular claims. I can tell you mine stopped looking dead, which was the only metric I cared about.
How I use Olaplex No.6
After shampoo and conditioner, I work one pump through towel-dried hair, palms pressed together first so it spreads evenly from mid-length to ends. Then I let it air dry. A quick pass with my ghd flat iron handles anything that needs it. The frizz is gone, and the hair reads smoother and healthier, not coated. I noticed the difference after the first use, and it has only improved with regular use. It also doubles as an overnight treatment if you want to wake up to softer hair.
Texture, scent, and value
Some leave-ins dry crunchy or leave a tacky film. This one does neither. The scent is there on application but it fades fast and never lingers. For thick, unruly hair that frizzes at the first sign of humidity, No.6 has been one of the most reliable things I've used. A little goes a long way, so one bottle lasts months.
Who is Olaplex No.6 for
If your hair is thick, coarse, or prone to flyaways, this is an easy recommendation. Fine hair can use it too, just start with half a pump and build, since too much will weigh it down. Curly and color-treated hair are both fair game.
Where to buy
$32 (100ml) at dermstore.com (sadly excluded from discounts but try my code OMGBART on everything else, Ulta.com, bluemercury.com, and SpaceNK.com.
Frequently Asked Questions
Leave-in. You apply it to damp or dry hair and style. No rinsing.
Yes. The brand rates it to 450°F, so it works before a blow-dry or flat iron.
A pump or less per use is plenty, so a 100ml bottle stretches for months even with regular use.
Yes, but go light. Start with half a pump on mid-length to ends so it doesn't weigh the hair down.
Yes, but Olaplex says they're the kind that smooth without building up on the hair over time.
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