Function of Beauty Reviews: Top 15 Hair Products in 2025

 

Explore Function of Beauty reviews for 2025’s best custom hair products. Vegan, cruelty-free, and tailored to you—find your perfect haircare today!

Tired of one-size-fits-all hair products that leave your strands flat or frizzy? Function of Beauty is shaking up haircare with custom formulas made just for you. Take their two-minute quiz, and they’ll craft shampoos, conditioners, and treatments based on your hair type and goals. From fighting frizz to boosting shine, their vegan, sulfate-free products are a hit in Function of Beauty reviews. This post dives into their top 15 products, plus gift cards, real customer stories, and why they’re a 2025 must-have. Ready for your best hair days? Let’s get started!

Want to learn how to style safely? Check out our guide on how to heat style hair without damage.

Why Function of Beauty Stands Out

 

Function of Beauty’s magic lies in its personalization. Their quiz asks about your hair type, damage, and styling habits to create a unique formula. You can even pick your bottle color and scent! Plus, their products are vegan, cruelty-free, and free of sulfates and parabens, using natural ingredients like quinoa protein and argan oil. With over 87 trillion possible combinations, it’s no wonder they’ve got 73k 5-star reviews! Wikipedia notes personalized haircare is a growing trend for better results.

Key Benefits

 
  • Custom formulas for your unique hair needs
  • Vegan, cruelty-free, and sulfate-free ingredients
  • Choose your bottle color and scent
  • Science-backed for up to 90% less breakage

Top 15 Function of Beauty Products:

 

These bestselling products are stealing the spotlight in Function of Beauty reviews. Each is tailored to your hair goals, with real customer feedback to show why they shine. Let’s dive into the details!

Function of Beauty reviews SOS Custom Repair Shampoo

1. SOS Custom Repair Shampoo

Price: $32.00 (8 oz) / $42.00 (16 oz)

This sulfate-free shampoo transforms damaged hair with its Adaptive f3 Bonding Complex, reducing breakage by up to 90%. Ideal for heat-styled or colored hair, it cleanses gently while strengthening strands. Users with wavy, highlighted hair report smoother texture and fewer split ends, praising its rich lather despite being sulfate-free. Pair it with a hair oil that works for extra shine.

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Function of Beauty SOS Custom Repair Conditioner

2. SOS Custom Repair Conditioner

Price: $32.00 (8 oz) / $42.00 (16 oz)

Designed to pair with the SOS shampoo, this conditioner delivers intense hydration and strength with an amino acid-rich formula. It smooths frizz and protects against breakage, making it a favorite for curly or damaged hair. Reviewers note their curls stay hydrated and manageable, even after heat styling. Apply from mid-lengths to ends for soft, resilient strands.

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Function of Beauty SOS Custom Repair Leave-In Treatment

3. SOS Custom Repair Leave-In Treatment

Price: $36.00 (8 oz)

This lightweight leave-in treatment hydrates and protects without weighing hair down, perfect for all hair types. It tames flyaways and adds shine, with users noting a nourished feel after every wash. Apply to wet or dry hair for a quick, polished boost to your routine.

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Function of Beauty SOS Custom Repair Hair Mask

4. SOS Custom Repair Hair Mask

Price: $38.00 (7 oz)

This deep-conditioning mask restores damaged, coily, or colored hair with a rich, bond-repairing formula. Users with thick, textured hair praise its ability to hydrate and strengthen curls during weekly treatments. Apply for 10–15 minutes for spa-like moisture and resilience at home.

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Function of Beauty Custom Shampoo

5. Custom Shampoo

Price: $29.00 (8 oz) / $39.00 (11 oz)

This customizable shampoo lets you target goals like hydration or volume with a quinoa protein formula. It cleanses without stripping, leaving hair healthy and shiny. Users with straight hair love the fun scent and color options, making it a versatile choice for any hair type.

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Function of Beauty Custom Conditioner

6. Custom Conditioner

Price: $29.00 (8 oz) / $39.00 (11 oz)

This conditioner complements the custom shampoo, locking in moisture and smoothing strands. Users with wavy hair report soft, manageable hair with a lasting scent. Match it to your shampoo’s color and fragrance for a cohesive, personalized routine.

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Function of Beauty Custom Co-Wash

7. Custom Co-Wash

Price: $22.00 (8 oz)

Perfect for curly or coily hair, this co-wash cleanses gently without stripping natural oils. Reviewers with textured hair say it keeps curls hydrated and defined between shampoos. Use it for a soft, clean feel, and pair with a scalp care routine for optimal health.

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Function of Beauty Custom Leave-In Conditioner

8. Custom Leave-In Conditioner

Price: $24.99 (8 oz)

This lightweight leave-in conditioner hydrates and smooths flyaways without greasiness, ideal for all hair types. Users with fine hair appreciate its ability to keep strands manageable between washes. Apply to damp or dry hair for a quick, polished look.

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Function of Beauty Custom Purple Shampoo

9. Custom Purple Shampoo

Price: $30.00 (8 oz) / $40.00 (11 oz)

This purple shampoo neutralizes brassy tones in blonde or grey hair, keeping color vibrant. Its gentle formula ensures shiny, healthy strands. Users with highlighted hair report brighter, brass-free results with weekly use.

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Function of Beauty Wide-Tooth Hair Comb

10. Wide-Tooth Hair Comb

Price: $12.99

This wide-tooth comb gently detangles wet or dry hair, minimizing breakage. Users with curly or coily hair find it glides smoothly without pulling, making detangling effortless. Use pre- or post-wash for knot-free, healthy strands.

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Function of Beauty Color Protection Hair Goal Booster

11. Color Protection Hair Goal Booster

Price: $4.00 (per booster)

This booster enhances shampoo or conditioner, protecting color-treated hair from fading with grape seed oil. Users with dyed hair say it keeps their color vibrant for weeks. Add it during customization for long-lasting, bold hues.

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Function of Beauty Coily Hair Bond Repair Shampoo

12. Coily Hair Bond Repair Shampoo

Price: $34.00 (11 oz)

Formulated for coily hair, this shampoo repairs bonds and hydrates, reducing breakage while preserving natural oils. Users with coily textures note defined, soft coils with regular use. It’s a go-to for strengthening textured hair.

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Function of Beauty Curly Hair Bond Repair Conditioner

13. Curly Hair Bond Repair Conditioner

Price: $34.00 (11 oz)

Tailored for curly hair, this conditioner repairs bonds and boosts hydration, defining curls while fighting frizz. Users report bouncy, soft curls that hold their shape. Apply after shampooing for vibrant, manageable results.

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Function of Beauty Travel Toiletry Set

14. Travel Toiletry Set

Price: $19.99

This stylish travel set keeps custom haircare organized on the go. Frequent travelers praise its durability and perfect fit for shampoo and conditioner bottles. It’s a must-have for maintaining your routine anywhere.

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Function of Beauty Styling Primer

15. Styling Primer

Price: $24.99 (8 oz)

This primer preps hair for styling with heat protection up to 450°F and frizz control. Users with straight hair say it extends the life of blowouts for a sleek, lasting finish. Apply to damp hair before styling.

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Gift Cards: Share the Custom Haircare Love

 

Give the gift of personalized haircare with Function of Beauty gift cards! Let your loved ones take the quiz and create their dream routine. Available in four amounts, these cards are perfect for any budget and make gifting easy and thoughtful.

Function of Beauty $50 Gift Card

$50 Gift Card

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Function of Beauty $75 Gift Card

$75 Gift Card

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Function of Beauty $100 Gift Card

$100 Gift Card

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Function of Beauty $150 Gift Card

$150 Gift Card

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How to Start Your Custom Haircare Journey

 

Getting started is simple. Take the Function of Beauty hair quiz to share your hair type and goals. Your custom products will arrive in 5–7 days, and new customers can enjoy 20% off their first subscription order—discount applied at checkout! For a complete routine, explore our hair care routine for your hair type.


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FAQs About Function of Beauty Reviews

 

Q1: What makes Function of Beauty different?

 

Their quiz-based customization creates formulas tailored to your hair, using vegan, cruelty-free ingredients. Unlike generic products, they address your specific needs, from frizz to color protection.

Q2: Are these products safe for colored hair?

 

Yes! Products like the Purple Shampoo and Color Protection Booster are designed to keep colored hair vibrant and healthy, as confirmed by users with dyed hair.

Q3: How long until I see results?

 

Many notice softer, shinier hair in a week. For major benefits like less breakage, use consistently for 4–6 weeks, as seen in Function of Beauty reviews.

Q4: Can I use these if I have sensitive skin?

 

Their sulfate- and paraben-free formulas are gentle, but those with sensitive scalps, like users with eczema, may need to pair with a scalp-specific product.

Conclusion

 

Function of Beauty reviews highlight why their custom haircare is a 2025 favorite. With 15 products, from shampoos to travel sets, and gift cards for gifting, there’s something for everyone. Their vegan, cruelty-free formulas deliver real results, like 90% less breakage and vibrant color. Ready to transform your hair? Take the custom hair quiz and save 20% on your first order. Share your favorite product below or join our GlowList for more hair tips!

Disclaimer: This article contains affiliate links. We may earn a commission at no extra cost to you if you make a purchase.

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