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Good Behavior Supreme Seal Smoothing Serum-Oil

IGK

Current Price $34.00
1.7 Ounce
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Highlights

  • Coconut oil
  • Good for: Dullness
  • Anti-frizz

Details & care

What it is: A high-shine finishing serum that provides frizz control for four days.

What it does: This concentrated formula imparts a mirror-like effect, smoothes the hair, contains UV protection and tames flyaways, even in high humidity.

  • Paraben-free; phthalate-free; sulfate-free; mineral oil-free; gluten-free; petrolatum-free; minoxidil-free
  • Made in the USA
  • Item #10759875
  • Core Product ID 333333T53Q

Ingredients

Dimethicone, C15-19 Alkane, C13-15 Alkane, Isododecane, C9-12 Alkane, Lauryl Laurate, Phenyl Trimethicone, Spirulina Platensis Extract, Cocos Nucifera (Coconut) Oil, Prunus Avium (Sweet Cherry) Seed Oil, Salvia Hispanica Seed Oil, Oryza Sativa (Rice) Bran Extract, Helianthus Annuus (Sunflower) Extract, Coco-Caprylate/Caprate, Caprylyl Glycol, Tocopherol, Rosmarinus Officinalis (Rosemary) Leaf Extract, Brassica Campestris/Aleurites Fordi Oil Copolymer, Caprylic/Capric Triglyceride, Fragrance (Parfum), Phenoxyethanol, Limonene, Coumarin, Linalool
Ingredients are subject to change at the manufacturer's discretion. For the most complete and up-to-date list of ingredients, refer to the product packaging

Shipping & returns

This item is only available for pickup at select Nordstrom Rack stores. Exclusions apply for orders to Alaska, Hawaii and Puerto Rico. Learn more about our shipping & returns policies.

This item is returnable within 40 days by mail or to U.S. Nordstrom Rack and U.S. Nordstrom stores. All beauty items are only eligible for return in U.S. Nordstrom Rack or U.S. Nordstrom stores.

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Reviews

(189)
4.6 out of 5
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Most helpful positive review

May 23, 2026
Super serum
[This review was collected as part of a promotion.] I have fine and wavy hair. It can be curly if I baby it, but I often lack the time. This serum is seriously helpful in taming flyaways as they appear, and taming any post-straightening frizz. It is such a lifesaver in the summer!
BrittanyI
Reposted from igk

Most helpful critical review

Dec 13, 2025
Good product overall just could be a bit better
[This review was collected as part of a promotion.] It's lightweight and easy to pack around if needed. It is easy to apply but the cap does get annoying because you have to pull it off and pump it. There is a good amount of product for the price. Having curly hair that can get frizzy it is definitely helpful but it isnt much different from other anti frizz products
tyw29_6228
Reposted from igk

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BrittanyI
Reposted from igk
May 23, 2026
Super serum
[This review was collected as part of a promotion.] I have fine and wavy hair. It can be curly if I baby it, but I often lack the time. This serum is seriously helpful in taming flyaways as they appear, and taming any post-straightening frizz. It is such a lifesaver in the summer!
samanthat27_6709
Reposted from igk
Feb 11, 2026
Helps reduce frizz
[This review was collected as part of a promotion.] This product is a medium weight product for your hair that definetly helps reduce frizz. It absorbs nicely into the hair leaving it shiny and frizz free. This lasts in your hair for quite a while keeping you happy!
tyw29_6228
Reposted from igk
Dec 13, 2025
Good product overall just could be a bit better
[This review was collected as part of a promotion.] It's lightweight and easy to pack around if needed. It is easy to apply but the cap does get annoying because you have to pull it off and pump it. There is a good amount of product for the price. Having curly hair that can get frizzy it is definitely helpful but it isnt much different from other anti frizz products
melissaw670_2696
Reposted from igk
Nov 23, 2025
Salon smooth hair in a bottle!
[This review was collected as part of a promotion.] IGK’s Good Behavior Supreme Seal Serum actually does what it promises, it smooths frizz and adds shine without making my hair feel heavy or oily. Even on humid days, my hair stays sleek and soft. I only need a tiny bit, and it layers nicely with other styling products. It honestly gives that fresh from the salon finish at home and it smells great.
mkcarroll_3831
Reposted from igk
Nov 22, 2025
Helped my crazy hair
[This review was collected as part of a promotion.] My hair has had a lot of new growth and fizziness’s healing my thinning hair. This anti frizz serum was very helpful with all of my crazy flyaways without making my hair greasy.
daijaclark_7275
Reposted from igk
Oct 27, 2025
Frizz free
[This review was collected as part of a promotion.] Eliminates frizz leaving my hair feeling soft and clean! At an affordable price it’s easy and manage to repurchase . Packaging is cute and colorful , and doesn’t have any nasty smell to it.
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