Stress, chemicals, styling products, hair dyes, sun exposure and even just the weather and environment can all contribute to unhealthy or thinning hair. Even if you’re not experiencing these symptoms, you don’t have to wait to start providing your hair with the nutrients it needs to flourish. Our products are made with the highest quality ingredients to promote thicker, stronger, and fuller hair. Sometimes the cause of follicular atrophy is simply aging, genetics or unknown. Krézinu supports your hair cycle.

Licensed Dietician & Nutritionist

New Mother

How to Serum


My hair is amazing. I could never get length. My hair was damaged from drying it and styling it. It’s incredible!! Absolutely amazing.


I definitely see the difference in so many ways as well as the baby hair. I have been using Krezinu for 1 entire year, I was never ever able to grow my hair. What my hair looks like in this picture is all thanks to Krezinu.


Krézinu is wonderful. I have been color-treating (damaging) my hair for over ten years. The shampoo, conditioner, and serum have restored the strength and fullness of my hair. After searching high and low for a product that is gentle and good for my hair and scalp, Krézinu comes as a huge relief.


What is scalp/hair aging?

The stats are shocking, most people’s best hair day peaks at 15 years old. More than 90% of all men and women at some point in their lives will suffer unwanted visible signs of aging, weak, thin lifeless looking hair. You do not have to wait until your aging hair/scalp is severe. Krézinu products were formulated to address the signs of aging and to optimize hair thickness, follicular cycle, fiber density and strength, using as natural of ingredients as possible, for all ages and hair types.

Factors that accelerate scalp/hair aging

What is the hair cycle ?

PHASE 1 The Anagen Phase

Anagen is the active phase of a hair follicle’s life. The cells in the root of the hair are dividing rapidly. A new hair is formed and pushes the hair that has stopped growing up and, eventually, off the scalp. During this phase the hair grows about 1 cm every 28 days. Hair on the scalp stays in this phase for two to six years. Having access to blood flow and nourishment is critical for your hair at this stage.

PHASE 2 The Catagen Phase

The catagen phase is a transitional stage and about 3% of all hairs are in this phase at any time. This phase lasts for about two to three weeks. Growth stops and the outer root shrinks and attaches to the root of the hair. This process is normal and gives way to new healthy hair.

PHASE 3 The Telogen Phase

Telogen is the resting phase and usually accounts for 6% to 8% of all hair. This phase lasts for about 100 days for hairs on the scalp. During this phase, the hair follicle is completely at rest.

How does Krézinu improve it?

Before and after