Hi Irishgirl Yes, our Extensive Thickening Treatment is gluten-free.

can i use my own styling products after i put it in my hair?

Hi Yes. Just apply Extensive Thickening Treatment directly onto the hair strand. You can apply it to damp or dry hair, and proceed to style as usual.

Does this penetrate the hair shaft or coat it?

Hi Yes. Our Extensive Thickening Treatment is a diameter-boosting hair treatment that penetrates hair strands to increase thickness over time while nourishing and restoring strands. Ideal for those with thinning hair or excessive breakage.

Can I use without a blow dryer?

Yes you can use Kerotin without a blow dryer.

Kerotin Extensive Thickening Treatment Spray For Fine And Thin Hair

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

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

Help Track order

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Description

💥 Unlock thicker, fuller hair—because your confidence deserves volume that speaks volumes!

NOURISH RESTORE - NaturePep Amaranth and rosemary penetrate deeply to strengthen and hydrate every strand.
INSTANT VOLUME UPGRADE - Pair with Kerotin Volumizing Line for fuller, bouncier hair that turns heads.
CRUELTY FREE CONFIDENCE - 100% made in the USA, alcohol & paraben-free, never tested on animals.
EFFORTLESS DAILY RITUAL - Quick spray application fits seamlessly into your busy routine for consistent results.
BOOST YOUR HAIR DIAMETER - Scientifically proven polymer tech thickens fine, thin hair visibly over time.

Kerotin Extensive Thickening Treatment Spray is a lightweight, all-natural hair booster designed for fine and thin hair. Using advanced polymer technology and NaturePep Amaranth, it increases hair diameter and promotes growth while providing heat protection and nourishment. Alcohol and paraben-free, cruelty-free, and made in the USA, this spray integrates easily into daily routines to deliver fuller, healthier hair with no sticky residue.

Specifications

ASIN	B0921KYMZ7
Active Ingredients	rosemary
Age Range (Description)	Adult
Age Range Description	Adult
Best Sellers Rank	#49,425 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #629 in Hair Sprays
Brand	K Kerotin
Brand Name	K Kerotin
Customer Reviews	4.1 out of 5 stars 1,326 Reviews
Hair Type	All
Item Form	Spray
Item Type Name	Hair Spray
Item Volume	118.29 ml
Manufacturer	Extensive
Manufacturer Part Number	Kerotin
Material Type Free	Alcohol Free
Number of Items	1
Recommended Uses For Product	Hair Growth, Hair Nourishing, Hair Strengthening
Scent	Natural
Scent Name	Natural
UPC	611851704322
Unit Count	4 Fluid Ounces

Reviews

P**N

Works

It helps putting body in my fine hair

9.07.2026

K**S

Hair is fuller and more manageable

Great product to increase hair volume. When I use it people comment on the fullness of my hair. No stickiness, gumminess or fullness. Im on my 2nd bottle and it goes a long way

13.01.2026

J**A

Heat protection

I'm half way through my first bottle..I have very fine and thin hair and this product seems to be making it a little thicker and it's protecting my hair from heat damage..not as dry looking

23.08.2025

A**R

Takes time

Hasn’t worked yet, but too soon to tell.

26.04.2026

D**2

Wonderful product!

I’ve been using this for probably over a year and it’s fantastic! My hair is full and honestly recommend for continuous use!

30.04.2026

J**N

EXCELLENT

#awesomeness

4.06.2026

B**S

Great Buy

My third reorder! I love this product! It is light and penetrates easily. I highly recommend for thining hair.

19.03.2026

E**N

Yes

Good

6.07.2026

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

¥10889

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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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

View all Trustpilot reviews

Kerotin Extensive Thickening Treatment Spray for Fine and Thin Hair - Spray I Hair Diameter Booster and Heat Protectant. All-natural, Cruelty and Alcohol-Free, Made in the USA. (1)

Details

Details

Description

Specifications

Reviews

Common Questions