Our best sellers are worth ALL the hype, guaranteed to give you salon-worthy hair - always!
SHOP NOWOur Shade Finder analyzes your hair history, desired color, and more to find the right permanent color kit for your hair goals.
FIND MY SHADESHOP BY:
HOME / MISTRESS
➡️ NEW ARRIVAL
ON SALE
Register now and earn 28 points
Bundle & Save:
$22.67/Unit
BUY 2 GET 1 FREE
3-Pack
BUY 3 GET 2 FREE
5-Pack
15% off • Free Shipping • Skip & cancel anytime
Why subscribe?
15% off every order
Fast, free shipping
Skip or cancel any time
Why subscribe?
15% off every order
Fast, free shipping
Skip or cancel any time
Pay in 4 interest-free installments with ShopPay
Also Available In:
DETAILS
This treatment instantly smooths, provides 4-day frizz control and detangles for softer, smoother, shinier hair without weigh-down or greasy residue. Customizable application provides a solution for medium to thick, frizz-prone hair and extremely dry, coarse and curly hair types.
BENEFITS
4-day frizz control
Ultra-rich nourishing treatment
Instantly smooths and adds shine
Apply as a rinse-out mask or an intense leave-in concentrate
APPLICATION
Medium, coarse hair: Apply 3 to 5 pumps to wet hair in the shower, focusing on mid-lengths and ends. Comb through and rinse.
Thick, very coarse hair: Apply 1–3 pumps after shower to clean, damp hair as a leave-in treatment. On non-wash days, dampen hair and apply as leave-in treatment daily as needed.
Cleanse with Good Behavior Ultra Smooth Shampoo for best results.
KEY INGREDIENTS
3% butter concentrate: Nourishes and adds shine
Frizz-blocking biolipid barrier: Smooths and fights frizz
Spirulina protein: Nourishes hair
How to use
Medium, Coarse Hair: Apply 3 to 5 pumps to wet hair in the shower, focusing on mid-lengths and ends. Comb through and rinse.
Thick, Very Coarse Hair: Apply 1-3 pumps after shower to clean, damp hair as a leave-in treatment. On non-wash days, dampen hair and apply as leave-in treatment daily as needed.
Cleanse with Good Behavior Ultra Smooth Shampoo for best results.
what it is
A salon-grade smoothing treatment that doubles as a rinse-off mask and an intense leave-in concentrate. Ultra-rich formula features 3% plant butters and oils to instantly smooth, provide 4-day frizz control, and deeply nourish.
who it’s for
SAFE FOR ALL HAIR TYPES INCLUDING COLORED AND CHEMICALLY TREATED.
KEY INGREDIENTS
Ground shipping is free on orders $50+ in the continental United States. Currently, our website only accommodates shipments within the contiguous United States: we do not ship to Alaska, Hawaii, and the U.S. Virgin Islands. We work with various shipping carriers and we kindly ask that you anticipate 3 to 8 business days for shipping. For international shipping requests please email [email protected].
IGK Hair offers free returns* and/or exchanges for IGK Hair products within 30 days of product receipt for item(s) purchased on igkhair.com. Products purchased from our salon and retail partners should be returned to the original place of purchase. Please note that returned merchandise must be unopened or gently used. Shipping fees are non-refundable. To start your return or exchange visit our Returns Center. You'll need the order number and email address associated with your purchase, or your shipping zip code. Please note if there is a price difference to be paid in an exchange an invoice is emailed. The invoice must be paid before the exchange order is released. If you have used Afterpay as a payment method, please be aware that the processing times may be longer.
If you have any further questions, please contact our client services at [email protected] with your order number mentioned in the subject line.
*exclusions apply to our free return policy
Yes! We are committed to the highest levels of service for our subscribers. All subscribers can change the frequency of a subscription at any time by logging into your account and clicking MANAGE SUBSCRIPTION on bottom left corner.
Overall rating: 4.4444447 / 5 from 54 reviews.
Customers find the Good Behavior Intense Daily Smoothing Mask effective for frizz control and moisture, leaving hair soft, silky, and healthier. It is suitable for medium to thick, frizz-prone, and extremely dry, coarse, and curly hair types without leaving greasy residue.
Review topics: ["feel","look","hair","mask","treatment","shampoo"].
"I'm sorry, but I didn't find anything extraodinary about this product. I has a product before trying this IGK and it was far better. This doesn't do what it says, my hair doesn't look healthier, nor less freez, neither softer. Actually I find the product greezy in my hair. Positives: the champoo smells very good."
"I currently have a sew in with leave out. This product completely smooth my hair with no frizz in the Atlanta humidity. I’m going to get the shampoo to complete my routine."
"This really conditions my hair and helps it be smoother!"
"I’m very glad I purchased the Good Behavior Daily smoothing mask as it really does the job of smoothing down those pesky fly away stray hairs so well."
"I have frizzy hair. It's fine and this formula doesn't weigh my hair down. I was instantly in love with this great product. Since it was so good I decided to try more of the products. I'm in love with the brand!"
"I dye my hair regularly and this keeps it soft and healthy"
"Finally found a product that has taken years off of my hair! I use it as a conditioner and rinse. I have not used it as a leave in."
"Really works"
"I have used this product for a couple of weeks, and so far I love how my hair feels, nice and healthy"
"I absolutely love these products. They make my hair feel so soft and silky. I highly recommend every single one of their products."
