Highlights
- Good for: Heat & sun protection
- Good for: Thinning & hair loss
- Texturizing
Details & care
A silicone free, color safe leave-in conditioner and styling primer that instantly hydrates, detangles, locks in 24 hr frizz control, enhances shine, reduces breakage and protects hair from heat up to 450° F/ 232° C for silkier, stronger, healthier hair.
- Clinically Proven heat protection and 24 hour frizz control after just one use
- Shields hair from thermal damage up to 450°F / 232°C.
- Requires 93% less combing force on wet hair and 76% less on dry hair, helping prevent stress and breakage.
- Delivers 75% reduction in frizz instantly, maintaining 73% frizz control after 24 hours in 80% humidity.
- Provides 68% less breakage with heat styling and 67% overall breakage reduction.
- * Based on the results of independent tress tests conducted after single application of NuProtect™ Leave-In Primer
- Item #11208006
Shipping & returns
Free shipping—all the time. Learn more about our shipping & returns policies.
This item has a different return policy. Items sold and shipped by NULASTIN can be returned by mail or to a Nordstrom store within 90 days of when the item shipped and must be in new condition, with tags attached. We can’t accept returns for this item at Nordstrom Rack.
Gift options
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Delivery
- Email gift message (free)
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Most helpful positive review
Mar 9, 2026
Good leave in conditioner
Not gooey, goes on smoothly. Would a travel size option that is refillable. Has helped with my hairloss and thinning
LeighaK
Verified purchase
Reposted from NULASTIN
NULASTIN response
Hi Leigha, we're happy to hear that you're loving our Leave-In Primer! We will pass your feedback along about a travel-size option. In the meantime, thank you for giving it a try!
Most helpful critical review
Jan 26, 2026
Not great
This doesn't seem to do anything for my hair. It did not improve frizz or softness. I would not recommend this for fine hair.
Anonymous
Verified purchase
Reposted from NULASTIN
NULASTIN response
Hi Kara, we're sorry that the product wasn't a fit for you. If you'd like to take advantage of our Performance Guarantee, please reach out to our team.
5 stars
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Pros:
Cons:
Current reviews don’t mention any.Sort by Most Helpful
Color
LeighaK
Reposted from NULASTIN
Verified purchase
Mar 9, 2026
Good leave in conditioner
Not gooey, goes on smoothly. Would a travel size option that is refillable. Has helped with my hairloss and thinning
NULASTIN response
Hi Leigha, we're happy to hear that you're loving our Leave-In Primer! We will pass your feedback along about a travel-size option. In the meantime, thank you for giving it a try!
Casey
Reposted from NULASTIN
Verified purchase
Mar 3, 2026
NuProtect Leave-in Primer
It smoothed my hair a little but I haven't been using it long enough to see how well it will work over time.
NULASTIN response
Hi Casey, thanks for the positive feedback! You should start seeing results with the Leave-In Primer after one usage; softer hair strands, less breakage, less frizz, and it is a great heat protectant. Can't wait to hear how it helps your hair over time!
Ashunta
Reposted from NULASTIN
Feb 21, 2026
Leave in primer
The leave in primer is the perfect additional step needed to product and nourish my hair. It’s a part of my regular hair prep routine and after 2 months I see the difference in my hair’s strength.
NULASTIN response
Hi Ashunta! Thank you so much for leaving us a review. We are so happy to hear that you are loving our Leave in Primer and that you are seeing such great results from using. We truly appreciate the support!
Tammie J
Reposted from NULASTIN
Feb 20, 2026
Pleasantly surprised with my results
I have to admit I was a little skeptical that this product would work for me. I’ve tried lots of different leading conditioners and none of them ever really worked well enough, but this primer worked all day it kept my hair from being frizzy. My hair stayed smooth, soft and shiny. Over the last few weeks. I have also noticed that my hair seemed stronger. I had less breakage and shedding a definite plus for me. As a woman in my 50s hair thinning and hair loss is a major concern, but I’m confident that this leave in conditioner will help with those issues
NULASTIN response
Hi Tammie! Thank you for your review. We are so happy to hear that you loved our Leave in Primer and that it is working so well for you! We truly appreciate the support!
Iammindy1
Reposted from NULASTIN
Feb 18, 2026
The best!!
[This review was collected as part of a promotion.] I love my Leave in primer!! It leaves my hair feeling smooth and soft ready for styling! It is light weight on my fine hair yet does exactly what it says!!! 5 stars!!!
NULASTIN response
Hi Mindy, thank you for the positive review about our new Leave-In Primer! We're so glad to hear that it's exceeding your expectations.
Anonymous
Reposted from NULASTIN
Verified purchase
Feb 11, 2026
Fabulous!
I love how smooth my hair feels after using this spray. I have noticed less hair fall after washing my hair and after blow drying.
NULASTIN response
Hi Melissa,
That is great news! We are so glad to hear that you are loving it and how it is working with your hair!
