Does this have sulfate and can you use on kertian hair?

As a brand representative for IGK, I will be happy to answer your question! All IGK products are formulated without sulfates SLS and SLES, making them safe to use on hair that is Keratin treated. I hope this is helpful!

After using product and drying hair, does it help keep hair smooth in damp, foggy weather?

I have very thick, curly, frizzy hair if I just dry with no product. This does help. Put on wet, then dry hair, then spray more on each section you flat iron. I still get curl in damp weather but not so much frizz. Maybe if I put more on but doing my hair is such a project. Try it. It does smell GREAT. If you don't like it just send it back. Best product I've found so far that at least does something. Otherwise, get a Brazilian Blowout. THAT DOES WORK BUT $$$ at the salon.

Should I use this spray before or after I add gel, other curling products etc(I always apply to wet hair)?

As a brand representative for IGK, I will be happy to answer your question! If using in damp hair, it is recommended to be applied before gel. I hope this is helpful!

Is it oily on fine thin hair?

As a brand representative for IGK, I will be happy to answer your question! Good Behavior Smoothing Spray is suitable for all hair types and is heat activated to aid in smoothing when applied to damp hair before blow-drying and in dry hair before styling with hot tools. You can use it either, or both ways! As long as it is used properly with heat, it should not contribute to an oily feeling in the hair. I hope this helps!

Good Behavior Spirulina Protein Smoothing Spray 5 6 Oz

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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¥18049

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

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Description

✨ Unlock your best hair day, every day with science-backed smoothness!

HUMIDITY UV ARMOR - Protects hair from environmental stressors, keeping your style flawless rain or shine.
LIGHTWEIGHT EVEN MIST - Delivers a fine, uniform spray that leaves hair soft and shiny without any heaviness or residue.
HEAT ACTIVATED SMOOTHING - Formaldehyde-free keratin polymer activates at 450°F for salon-quality sleekness without the harsh chemicals.
TIME SAVING BLOWOUT BOOST - Cuts down blow-drying time so you can get out the door faster with effortlessly smooth hair.
PROTEIN PACKED PERFORMANCE - Infused with nutrient-rich spirulina protein to strengthen and nourish every strand.

IGK GOOD BEHAVIOR Spirulina Protein Smoothing Spray is a 5.6 oz professional-grade hair treatment that combines spirulina protein with a formaldehyde-free keratin polymer. It smooths, strengthens, and protects hair from heat up to 450°F, humidity, and UV damage, delivering 24-hour frizz control and reducing blow-dry time for a sleek, shiny finish.

Specifications

ASIN	B0895K6LG7
Best Sellers Rank	#403,959 in Beauty ( See Top 100 in Beauty ) #1,457 in Hair Sprays & Mists
Brand	iGK
Country of Origin	USA
Customer Reviews	4.3 out of 5 stars 5,007 Reviews
Global Trade Identification Number	00810021403670, 00810021404530
Hair Type	Frizzy
Item Form	Spray
Item Volume	5.6 Fluid Ounces
Item Weight	159 g
Liquid Volume	186 Millilitres
Manufacturer	IGK
Material Type Free	formaldehydex
Number of Items	1
Product Benefits	Smoothening
Scent	Unscented
UPC	810021401270 810021403670 810021404530 810021404028 810021400242
Unit Count	158.7 Grams

Reviews

L**A

It works

I love this product, smooths the hair, it works

16.03.2025

H**M

same as described

received at time, Recommended

28.10.2024

F**A

El aroma

Me encanta el aroma, la textura es muy ligera, el spray arroja el producto de manera uniforme en el cabello y el contenedor tiene bastante producto. Sin duda lo volveria comprar

9.02.2025

J**S

Fantástico

Me encanta su olor y como deja el pelo brillante, tengo pelo muy rizado y logra ayudarme mucho con el laciado..... También hace que el peinado me dure mas! Muchas Gracias!

18.03.2026

H**N

Good product, would buy again.

It works for wavey or straitened hair. Used it with a hot curling iron and it held the curls for at least 4-hours. I actually like the smell, though the smell does not last long. Received product in good condition and in a timely manner.

5.06.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

¥18049

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Sneha T.

Received my product in pristine condition. Great service overall.