Natural Hair Therapist

Natural Hair Therapist, Product Formulator, and Author

As a pioneer of the concept of natural hair therapy, Janine is primarily seen as an authority figure in the industry and earned a well-deserved reputation as the #1 Natural Hair Therapists on a global scale. Janine established Sisay Cosmetics in the year 2004 in The Netherlands and operated with the brand name Sisay. She leverages extensive research and over 15 years of experience in natural hair care to train natural hair therapists to cater to the growing need for natural hair care across the globe. She aims to educate a minimum of 5,000 natural hair therapists through quality education and her NISH certification programs.

She is a recipient of the Global Author’s Award in the UK and serves a mentor with African Woman in Europe ( AWE). As an international speaker, Janine had shared the stage with Ndaba Mandela, JT Foxx   -the #1 wealth coach, Vanilla Ice, among many other industry leaders. Janine was also featured in the cover story of “her grit magazine,” a South African Magazine.


I’m Janine

Over the last decade, I had the honor and privilege to work with hundreds, if not thousands of women and young ladies. As a natural hair therapist, I have helped many of them to understand their hair needs and discover how they successfully can treat their own hair and scalp.


Work with Janine

NISH Certification Program

The world needs more certified Natural Hair therapists. I have put together a program that will turn you into a skilled and certified natural hair therapist. My courses are accredited by the international accreditation organization.

Business Training 

What is missing to accelerate your business to the next level? We analyse and give you step by step actions to implement. Simple but effective methods to bring your business to the level you need it to be.

Formulation Program

Stand out and have your own product. Not just branded, but specifically and exclusively formulated for you. Contact us to find out how we can work together

Natural Hair Products

I have a range of natural hair products to help reach the hair goals of the curls and afro community. We know exactly what are in the products, since all the products have been formulated by Janine herself. 

Master classes for Salon Owners

Take your business to the next level with these masterclasses specially developed for busy salon owners like yourself.


On a regular basis we organise workshops for the afro and natural hair community. We also offer online workshops to help you understand your hair better, so that you can take conscious decisions about your hair.

Janine van Throo is a driven, honest woman and a professional in her field.I have a very good experience and can always count on very good advice and explanation about the products that make you clean inside and make you shine outside.I use the water kefir every morning with a teaspoon of MSM powder. This promotes my hair growth and literally cleanses me inside.
I am very satisfied with the Herbal scalp oil, the okra hairline, and my silk nightcap

Carmen K – The Netherlands

Janine and I are teenage friends. Moving to another country meant we didn’t see for years. When we finally met again I saw a whole lot of bottles cups and containers in her kitchen. And I wondered “what was cooking” was she baking cakes all day? Nothing like that. She appeared to be a true scientist, and she told me about her business – HAIR and how it all started: with her own curls.

Desiree S.- Aruba

I feel like a woman again! For many years it seems as if my hair would not grow. It broke and I even had bald spots. I started to use the NISH and I am so happy that I was coached by Janine. My bald spots are gone, I have a routine that is easy for me and my hair!! Oooh my hair!!!
Thank you Janine

Sandra D- The Netherlands

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