OLAPLEX Just Launched Its No.4FINE and NO.5FINE System—And It’s Specifically Designed for Fine Hair

05/08/2025

If you consider yourself a member of the fine hair club, you’ll absolutely love OLAPLEX’s latest innovation. 

The cult haircare brand recently added two new products to its best-selling range: No.4FINE and No.5FINE Bond Maintenance Shampoo and Conditioner. Both products make up the first-ever system from OLAPLEX designed specifically for fine hair.

Image courtesy of OLAPLEX

The incredible duo delivers two times the volume and strength with a featherlight formula that never weighs hair down. At the heart of the No.4FINE and No.5FINE system is a mild amino acid-based surfactant that gently opens the cuticle to cleanse effectively without stripping. Specifically suited for fine hair, this advanced cleansing technology works in tandem with OLAPLEX’s bond-building molecule. Working together, this regiment hydrates, repairs, and strengthens while delivering volume and structure to fine hair, instantly.

Both the shampoo and conditioner are powered by a trio of fine-hair-friendly ingredients including flexible polymers to help lift hair at the root, low molecular weight hyaluronic acid to infuse strands with deep hydration, and the brand’s proprietary hydra-balancing matrix to ensure weightless moisture and oil control. When used together the No.4FINE and No.5FINE system delivers transformative results—a 60% reduction in breakage, increased volume, and clinically proven protection against culture damage—all while being silicon-free, sulfate-free, and color safe.

Image courtesy of OLAPLEX

“We’ve listened to our pros and our community—there was an overwhelming demand for more customized routines tailored to hair type,” says Amanda Baldwin, CEO of OLAPLEX. “This launch is more than just a new system—it’s a strategic evolution of OLAPLEX’s wash care portfolio, expanding our presence in the prestige hair care category and reinforcing our commitment to delivering personalized, high-performance solutions for every client, every hair type. Shampoo and conditioner aren’t just the beginning of your wash day—they’re the beginning of every style, every look, every possibility.”

The exciting expansion comes after the success of OLAPLEX’s original No.4 and No.5 Bond Maintenance Shampoo and Conditioner, which are now the #1 Prestige Shampoo and Conditioner in the U.S., according to Circana. The launch of No.4FINE and No.5FINE mark a pivotal moment for the brand and the ongoing evolution of its wash care portfolio.

Priced at $32 each, OLAPLEX’s No.4FINE and No.5FINE are currently available for purchase at olaplex.com as well as various retailers including Sephora, Ulta Beauty, and Amazon. 

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Camille Nzengung

Camille Nzengung is a Features Editor at The Tease, where she covers all things hair. You can find her writing about the best hair products, the coolest hair trends, and all the exciting new hair launches. Send her a pitch: cnzengung@thetease.com.

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