Four Reasons Professional

Fiber Mousse

6.56 FL oz

  • Fiber-rich mousse is the ideal base product for voluminous blow-outs
  • Weightless volume and flexible hold
  • Heat protection for blow-drying
  • Works especially well with fine hair

Cruelty free
& Vegan

Recyclable materials for

European quality
& reliability

Sustainable manufacturing

Fiber Mousse gives bounce and flexible, long-lasting hold

A fiber mousse that gives hairstyle flexible, long-lasting hold and bounce. Fibers add support for the style while letting hair move naturally. Enjoy voluminous hair with fullness that lasts! Four Reasons Professional Fiber Mousse is a professional-quality product created from the best ingredients. It has a vegan formula and recyclable packaging.

Key ingredients

Vegan formula

Vegan and cruelty-free formulas ensure we use only the best ingredients

Sustainable packaging

Recycled materials are used in packaging, and its 100% recyclable when empty.

Full list of ingredients + -

Aqua, Butane, Propane, Alcohol Denat., Polyquaternium-68, Propylene Glycol, Isobutane, Polyquaternium-11, Cocotrimonium Methosulfate, PEG-40 Hydrogenated Castor Oil, Ceteareth-20, Laureth-4, PEG-90M, Triethanolamine, Phenoxyethanol, Ethylhexylglycerin, Parfum, Alpha Isomethyl Ionone, Benzyl Salicylate, Butylphenyl Methylpropional, Citronellol, Geraniol, Limonene, Linalool.

Fiber Mousse gives bounce and flexible, long-lasting hold

How to use

Apply evenly to washed, towel-dried hair, focusing on the roots

Comb through to spread product evenly


Style as desired

PRO TIP: Get bouncy, super-soft curls that last all day long!

Customer Reviews

Based on 24 reviews
Clara Walsh
You must try it

You must try this mousse you will have absolutely no regrets.

Nettie Shelton
Just perfect!!

Perfect finish, good smell, premium quality, natural ingredients, nice packaging, a perfect combination for me, it has become an indispensable element in my hairdresser.

Elnora Evans
I was expecting more

I was expecting more from this mouse, I mean, a lot of reviews says you can use it alone and you're done.. but that's not true.. you have to get your blow dry done for results. As a heat protectant it works as promised.. my hair looks shinier and I had to apply less heat to get the desired shape. It smells good and a small amount of product is enough so I think it is worth its price...

Francis Vargas
Only if you are in a hurry

I like the concept but there are better volumizing products in the market and cheaper heat protectants too. This is good if you are in a hurry and you want to save time, put it in your hair, do minimal styling and go out.

Lou Garrett
Simple but effective formula.

I've been using this for a while after a long trip experimenting with lots of styling products. This choice was a bit unexpected for me to be honest but sometimes it seems that less is more you know? Maybe you want to use one million products but what your hair needs is to take a break, to breath with a more lightweight simple but effective formula.

Have any questions about Four Reasons?

Color Mask Treatments are pigmented deep conditioners, and Color Mask Shampoos are pigmented shampoos.

Color Masks are specially formulated for color-treated hair, as they perfectly
take into account all that colored hair needs: color refresh and deep

Color Masks don't contain harsh chemicals like ammonia. Quite the contrary
actually! They gently cleanse and deeply condition and repair hair, while
depositing color pigments to the hair's surface.

Color Masks are intended to tone hair or maintain your existing hair color. We all know that beautiful hair color can fade and lose its vibrancy within a few washes. That's where Color Masks come in! Use in place of regular shampoo or conditioner whenever your hair color needs to be refreshed. Simple as that!

Yes! All Four Reasons products are 100% vegan and cruelty-free.
We do not test, and we do not have anyone else test Four Reasons products or their ingredients,on animals. In our products, we use raw materials from known European suppliers. According to EU legislation, testing these raw materials on animals has been banned since 2009.

Yes, the grass is actually greener on this side!
By the end of 2020, 99% of our packaging is recyclable when empty, and 35% of the plastic packaging for our retail products were either recycled or bioplastic. Cardboard boxes used in product shipments are also 85% recycled cardboard, the printed reclaimed paper used to fill the transportation boxes is 100% made of recycled materials and the packaging tape is recycled paper. Our shipments may not be the prettiest but it’s not our style to spoil the environment to please the eye – beauty doesn’t come in one shape and size, and this applies to packaging, too!

The safety of our staff, customers, and community is always top of mind. In light of COVID-19, we have taken steps to prevent the spread of germs inside and outside of our facilities. That includes increased cleaning and disinfecting, work from home when possible, and other measures as recommended by World Health Organization (WHO) and Center for Disease Control (CDC).

US orders ship from Missouri, USA.

Fiber Mousse

Fiber Mousse

6.56 FL oz