Hair Care Customized by Hair Type | Function of Beauty

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Free Shipping on Orders Over $75

Free standard shipping applies to one-off orders over $75 shipping to the United States or Canada. Offer excludes subscription orders and expedited shipping methods. Terms and conditions apply.

Love Your Curls

Shop formulas for curls, waves, and everything in between.

Shop Your Hair Type

100% Vegan

Dermatologist Tested

cruelty - free

sulfate - free

paraben - free

100% Vegan

Dermatologist Tested

cruelty - free

sulfate - free

paraben - free

100% Vegan

Dermatologist Tested

SOS: REVOLUTIONARY REPAIR

One Use. Total Transformation.

Restore softness, shine and split ends by zeroing in on your hair type, goals, and styling habits with a patent-pending formulation designed only for your hair’s unique needs.

Discover More

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\ \ SOS Custom Repair Hair Mask \ \ $38.00](/content/products/sos-hair-mask/index.html)
\ \ SOS Custom Repair Leave-in Treatment \ \ $34.00](/content/products/sos-leave-in-treatment/index.html)

SCIENTIFICALLY PROVEN, BACKED BY DATA

2x stronger hair  90% less breakage

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*complete SOS system vs untreated hair, instant and 4 weeks results

BEFORE

AFTER

Results on wavy, highlighted hair

“This SOS Custom Repair saved my strands! My hair feels so much healthier, my frizz is under control and spilt ends are banished. I can’t stop touching my soft hair.” - Jessica

Wavy

Thin

Highlights

Heat Styling

BEFORE

AFTER

Results on curly, highlighted hair

“My hair walks into a room before I do, so I’m looking for ways to take care of it. With SOS Custom Repair I know my curls will stay hydrated and frizz-free even if I sneak in a few heat styling moments throughout the week.” - Brenda

Curly

Medium

Highlights

Heat Styling

BEFORE

AFTER

Results on highlighted, straight hair

“My hair feels so soft, nourished and hydrated after using SOS Custom Repair. The Leave-In Treatment is my go-to every time I wash my hair.” -Yoko

Straight

Thin

Highlights

Heat Styling

BEFORE

AFTER

Results on colored, coily hair

“I love experimenting with my hair color which means I need to prioritize hair health to prevent breakage. SOS Custom Repair is my secret weapon to keeping my coils healthy while I keep being me.” -Keturah

Coily

Thick

Colored

Heat Styling

Real Repair Stories, Real Joy

HOW YOU FUNCTION

@kendall.toole

"You can visibly see a difference after just one use!"

Kendall

@marissa_lanae

“It adds strength, hydration, frizz-control and most important to me it adds heat protection up to 450°.”

Marissa

@slaymiya1

"I’ve seen a huge improvement in my curls, including less breakage and elasticity even after I manipulate them."

Samiya

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How it works

Two Steps to Custom Haircare

You take a quick, two-minute quiz about your hair history, goals, damage and styling habits.
We formulate made-to-order, tailored haircare, prioritizing naturally-derived ingredients, and ship it to you.

Take the Quiz

SHOP — ALL

>\ bestseller

Custom ShampooFrom $29.00

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Custom ConditionerFrom $29.00

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Custom Hair MaskFrom $26.00

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>\ frizz fighter

Custom Hair SerumFrom $31.00

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Custom Co-WashFrom $22.00

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Custom Leave-in ConditionerFrom $24.99

customize now

>\ EXTRA 10% OFF

Custom Body LotionFrom $36.00

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>\ EXTRA 10% OFF

Custom Body WashFrom $36.00

customize now

Clean. Vegan. Cruelty-Free.

The Function Standard

With Function of Beauty, you are guaranteed a highly efficacious formula with no compromises. Always clean, vegan, and cruelty-free, our formulas focus on naturally-derived ingredients and powerful science to meet high efficacy and testing standards.

Browse by Category

Haircare

Custom Sets

Bodycare

Still Unsure?

Don’t stress. We've paved our quiz like a yellow brick road. Just a two-minute detour from your day, and spoiler: there's no Wicked Witch at the end, just perfect hair days.

CUSTOMIZE MYFORMULA

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