Nutrafol Strand Serum

From the first use

• Helps reduce breakage and split ends2 while delivering up to 72 hours of frizz reduction for smoother, more manageable hair.

After 1 week

• An 83% reduction in breakage.3 Women reported that their hair felt silky smooth.

After 2 weeks

• Hair is visibly healthier with noticeably improved hair quality. Hair feels softer and smoother.

Shake well. Start with 2–3 drops in your hand, adding more as needed. Apply to damp or dry hair, focusing on mid-lengths to ends. Style as usual.

Pro tip: Support growth with a Hair Growth Nutraceutical, then protect the strands you’ve grown with Strand Serum.

When can I start seeing results with Strand Serum?

Instrumentation testing showed results starting with the very first application. From your first use, Strand Serum helps reduce breakage and split ends while delivering up to 72 hours of frizz reduction for smoother, more manageable hair.In a consumer perception study, after 1 week, women with chemically treated, dyed/color-treated, or chemically straightened hair reported that their hair felt silkier and smoother.After 2 weeks (5 uses on both damp and dry hair), you'll see even greater improvements, including an 83% reduction in breakage. Hair feels softer, looks shinier and healthier, with an overall improvement in hair quality.

What is the difference between the Strand Serum and Hair Serum?

Strand Serum is formulated to care for the hair fiber, strengthening and helping protect your strands from breakage at the mid-length to ends so that it can grow longer.Hair Serum targets thinning hair directly at the scalp by replenishing nutrients and reducing visible hair fall and shedding caused by breakage for visibly fuller, thicker hair.

Can I use Strand Serum while pregnant or breastfeeding?

Yes. Strand Serum is suitable for use by individuals who are pregnant or breastfeeding when used as directed.

Should I apply it before or after heat styling?

Apply Strand Serum before heat styling to help protect your hair from heat damage. Strand Serum provides heat protection up to 450°F (232°C) from curling irons, flat irons, and other heat-styling tools.You can also reapply a few drops after styling for an extra boost of strength and protection.

Is it normal for the formula to separate?

Yes. Strand Serum is formulated with two phases: a water phase and an oil phase. The water phase helps deliver ingredients deep into the hair cortex and strengthen the hair fiber while the oil phase helps replenish the hair's natural lipid barrier and smooth the cuticle.Because these phases have different properties, they naturally separate over time. Simply shake well before each use to combine the two phases and ensure you receive the full benefits of the formula with every application.

Isn’t it counterproductive for there to be water-based ingredients if it’s helping protect hair from water and humidity? Why not just use oil-based ingredients?

The water in the formula isn't what causes frizz or humidity damage. Instead, it serves as a delivery vehicle, helping beneficial ingredients penetrate deeper into the hair fiber. Once the hair dries, those ingredients remain in the hair to strengthen from within.The oil phase serves a different purpose by smoothing the hair cuticle and creating a lightweight protective barrier that helps repel humidity. Together, the water and oil phases form our DualFusion™ Complex, delivering strengthening ingredients deep within the hair while helping shield the outside of the hair from humidity. The result is stronger, smoother hair that's better protected against frizz.