Meet Our Experts

The Function Hair Expert Council shares insights about hair health and maintenance tips, product ingredients, and how to build the best routine.

Dr. Sheila Farhang
dermatologist

Dr. Sheila Farhang

dermatologist

Dr. Sheila Farhang is a board-certified dermatologist and double-fellowship trained cosmetic surgeon. Through her popular Instagram (@Dr.Sheila_Derm), she is known for her innovative skin, beauty and wellness tips, female empowerment content, and integrative medical expertise.

Amanda Buechner
hair loss expert

Amanda Buechner

hair loss expert

After experiencing hair loss, Mandy opened her Hair Loss Control Clinic and Thairapy Wellness Center, where she works as an educator and advocate for healthy hair and total wellness. Mandy has also helped thousands with hair loss and healthy hair choices on TikTok and Instagram.

Sabrina Porsche
stylist

Sabrina Porsche

stylist

An expert in cutting, styling, braids, wigs and extensions, Sabrina’s clients include Beyoncé, Jennifer Lopez, Solange Knowles, Meagan Good, Bresha Webb, Shay Mitchell, Adrienne Bailon, Vogue, W magazine, Netflix, Adidas, OUAI, Nike, Kylie Skin and Under Armour.

Heleen Kibbelaar
cosmetic scientist

Heleen Kibbelaar

cosmetic scientist

Heleen completed a chemistry degree at the University of Amsterdam and internships at L’Oréal and Unilever. Currently pursuing a PhD in Soft Matter, she studies the flow behavior of complex fluids such as shampoos and creams, and runs the Instagram account @ScienceMeetsCosmetics.

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