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Experts say this treatment can rebuild and hydrate hair — even color-treated locks

One Shop TODAY editor swears by the weekly hair treatment for taming frizz.
Woman holding up Olaplex No. 3 and a bottle of No. 3 siting on a counter.
TODAY Illustration / Courtesy Rebecca Rodriguez / Kara Birnbaum / TODAY

Great hair can make you feel confident and ready to tackle the day. But when your strands get dry and damaged from dyes and heat tools, those perfect hair days can be hard to come by.

Sometimes a great hair treatment can be the trick to getting your locks back on track. Shop TODAY's director of e-commerce Jennifer Birkhofer has recently been swearing by the Olaplex Hair Perfector No. 3 Repairing Treatment to combat frizziness, and it turns out the product is also expert approved.

"It’s very popular and it’s a really great treatment to use after color," Edward Tricomi, co-founder of Warren Tricomi Salon, told Shop TODAY. "It holds (color) in, rebuilds and hydrates the hair."

For best results, the brand suggests applying it to wet hair for at least 10 minutes, then shampooing and conditioning as usual. It's meant to be used once weekly, but those with more damaged strands can use it up to three times per week.

Olaplex Hair Perfector No. 3 Repairing Treatment

The concentrated treatment aims to bond together damaged hair and repair split ends for a healthy look. Tricomi told us the special blend of polymers, alcohols and salts is what gives the treatment its hydrating effects.

Birkhofer's hairdresser initially recommended the product, and now it's become a staple in her routine.

"My hair gets really frizzy in the summer and is prone to damage, and I'm always looking for a new treatment," Birkhofer said. "I bought this and instantly loved it. Once a week, I wet my hair and put a good dollop of this mask on before I shower and leave it in for 10 minutes or so. Then you just shampoo and condition as you normally would and your hair is so soft and shiny!"

NBC News Select's editorial operations associate, Rebecca Rodriguez, has been stocking up on this Olaplex favorite for years. "Before I shaved my head, my hair was so damaged and processed that the Olaplex No. 3 felt like the only thing saving it from falling out. My hair never felt softer after a wash," she said. "Now it's helped maintain and nourish my grown-out curls."

Verified Amazon reviewers also say the treatment has helped nourish their hair and reduce damaged ends.

"I love this stuff!" praised a verified reviewer. "I've got over-processed hair and wish I had started using this stuff sooner. It brought my curls back to life after just one use. I'll be purchasing this product again and using it a couple of times a month."

Other reviewers have had success with leaving the product in overnight.

"Love, love, love this product," raved another verified customer. "I put it in my hair a couple of hours before bed and my coarse dry hair just drinks it up. By the time I go to bed, although it feels heavy, it's not messy and going to ruin a pillowcase. I wash it out in the morning and my generally crispy hair feels super soft."

Reviewers with dyed hair are also noticing that the product helps maintain the color.

"My stylist turned me onto this treatment a couple of years ago," wrote a verified reviewer. "I am obsessed! It keeps my colored hair in good shape and helps fight dry ends. Do not hesitate if you have chemically treated hair and use styling tools."

If you've been searching for that perfect product to help your damaged hair, then this might be the quick fix for you!

More Olaplex hair products to shop

Olaplex No. 0 Intensive Bond Building Hair Treatment

If you suffer from hair thinning or damage, use this treatment to help repair and strengthen your locks. The brand says it uses bond-building technology to repair hair and restore its shine.

Olaplex No. 4 Bond Maintenance Shampoo

Maintain those repaired bonds by adding this restorative shampoo to your hair care routine. The formula is said to be highly moisturizing and suitable for all hair types.

Olaplex No.7 Bonding Oil

One Shop TODAY contributor tried Olaplex's Bonding Oil and said it gave her "fresh-from-the-salon" shine and vibrancy. A little goes a long way — just add a few drops to tame pesky flyaways, smooth strands and eliminate frizz.

Olaplex No. 8 Bond Intense Moisture Mask

After a sunshine-filled summer, you might be looking for ways to nourish your dry hair. Bring your locks back to life with this moisture mask, which is designed to double the shine, boost moisture and keep hair "six-times smoother."

Olaplex No. 9 Bond Protector Nourishing Hair Serum

After trying Olaplex's first-ever serum, editorial assistant Jillian Ortiz noticed a "huge" difference to her hair texture. Her curls felt softer, looked healthier and were given instant definition.

Olaplex No. 6 Bond Smoother Reparative Styling Creme

If you're interested in faster blow dries or frizz-free air dries, add this styling creme to your cart ASAP. According to the brand, the leave-in treatment offers up to 72 hours of frizz control and can protect your hair from everyday damage.