Function of Beauty Hair Review

About Function of Beauty

Function of Beauty Hair Review

Function of Beauty positions itself as the world’s most customizable hair care and body care brand for men and women.

From the first ingredient to the last squirt and on to shipping, the product really is made for “you (and only you).

The customer is at the centre of the customized process. It’s up to you to decide what goes into your haircare formula. 

Function has a whopping 827k followers on Instagram. It’s obvious they’re gaining popularity in the haircare world.

Before we get into their product line, here are the highlights of this Function of Beauty hair review:


  • Gives you the ability to customize a product that fits your needs
  • High level of hair care customization[1] with tons of possible product formulations
  • Wide range of colors, ingredients, and fragrances for hair care products
  • Customer is involved in product development from start to finish
  • Hair products are free of sulfates and parabens, vegan, and cruelty-free[2] 
  • Reasonable price compared to other high-end and customizable haircare brands
  • Comprehensive membership program
  • Tens of thousands of 5-star ratings and happy customers

This Function of Beauty hair review will take an in-depth look at the brand and a selection of bestsellers, customer ratings, promotions and more; to help you decide if their products are worth the buy. 

Overview of Function of Beauty 

Function of Beauty Hair Review

Function of Beauty was created in 2015 by a serious power trio—an engineer, a navy vet, and a chemist—and is headquartered in New York.

All product formulas are custom filled in the USA, and you can choose from trillions of innovative formulations designed by founders Josh, Zahin, and Hien for your individual hair care and body care needs. 

Function’s values are pivotal in the design and discovery process. Their imaginations run wild and they believe in embracing change, as they continuously seek novel ways of doing things.

Function of Beauty wants to carve their own path, to break the rules, to take risks and to envision a new normal to offer the very best in hair and body care. 

When it comes down to it, we all have individual preferences, hair and skin types, moods, styles, and passions. Our individuality is worth designing products for, and the Function supports this right.

Every person’s hair and skin have different needs, needing products unique to their texture and composition which is dependent on many factors. Your skin requires the perfect ecology to keep it at its healthiest according to this study[3]. Similarly, the hair is also a site of diverse organisms that play an important role in immune function, so hair and skincare are far deeper than just physical. 

No two people have an alike formula, so Function is like the snowflake of brands, every product is different[4].

A core staple is the Function of Beauty Hair Quiz which allows you to formulate and customize your own haircare solution based on your personal needs.

Function of Beauty Custom Haircare Quiz Review

We took a tour of the Haircare & Hair Quiz to get a sense of how things work for this Function of Beauty hair review.

It’s simple and fun! You know yourself best, so filling in the details of the locks you brush and wash should be a breeze. You first identify whether your hair is straight, wavy, curly, or coily.

Function of beauty hair quiz review

Next, the team gets into assessing your hair structure, and you describe your tresses as fine, medium, or course. After that, you clarify the moisture level between dry, normal, and oily.

Then it gets a bit more detailed. You can select up to 5 hair goals, with a minimum of one.

Function of beauty hair quiz review

Believe me, you’re finger will be clicking on that mouse pad when you see the aspirations you can choose:

  1. Deep condition
  2. Fix split ends
  3. Hydrate
  4. Replenish hair
  5. Strengthen 
  6. Anti-ageing
  7. Color protection
  8. Lengthen
  9. Thermal protection
  10. Volumize
  11. Anti-frizz
  12. Curl definition
  13. Nourish roots
  14. Shine
  15. Soothe scalp
  16. Straighten
  17. Oil Control
  18. Reduce brassiness

You can select a silicone-free formula for your shampoo and conditioner if you like.

Silicone, which is explored in this study[5], if not water-soluble can remain on the hair and lead to it becoming dull and drier. However, it can also protect the hair shaft from abrasive damage and increase the body of the hair. 

Then you get to customize your fragrance between Nude (p)each, Strike a (r)ose, (Pear)fection, All(you)calyptus, True l(o)vender, and Fragrance free. Determine how strong you want the fragrance to smell (light, medium, or strong).

Function of beauty hair quiz review

We’re loving the puns here. Finally, choose from a variety of bright colors and add the most important personal touch – your name!

Function of Beauty Hair Review 1

After you checkout, the hardest part is waiting for your customized Function of Beauty products to arrive!

The cool thing is you can have a pleasantly subtle scent[6], make your locks be perfume on top of your head, or somewhere in the middle. It’s all up to you!

Function of Beauty also offers shampoos, conditioners, leave-in shampoos, hair masks, hair serum, body wash, body lotion, and gifts. Let’s dive into the brand’s top sellers.

Function of Beauty Shampoo and Conditioner Review

The Function of Beauty Shampoo & Conditioner is a bright, beautiful and bold bestseller, sold in fantastic colors like lavender, teal, and bubble gum pink.

Unlike the regular shampoos you purchase out of habit from the drugstore shelf, this shampoo is customizable to reflect your personality, needs, and taste to meet your unique hair goals. You definitely won’t have a partner or sister confusing your shampoo for theirs! 

Function hair products are free of sulfates and parabens, entirely vegan, and cruelty-free. Sulfates are a cleaning agent which essentially strips the hair of its natural oils in an effort to cleanse it of all debris. Parabens[7] are used to increase the shelf-life of the product by preventing the growth of bacteria and fungi.

You can also customize your purchase so that your formula is produced free of silicone, dyes, and fragrances. It really is all up to you! Amazingly, in the natural formulations, there are up to 60 natural ingredients[8].

The recommended use is 1-2 pumps of Function Shampoo applied to wet hair. Massage the shampoo into a lather, rinse, and repeat if necessary.

You can tell you’re using enough Function Conditioner if you coat your strands of hair evenly from mid-shaft to the ends. Once you’ve applied the conditioner, leave it for 1-2 minutes before giving a thorough rinse. 

Function of Beauty Shampoo & Conditioner comes in two sizes: 8 oz ($40) and 16 oz ($50).

Function of Beauty Purple Shampoo Review

Function of Beauty Purple Shampoo is formulated for blondes, grey-haired women, and those with bleached or highlighted hair. The deep purple pigments resolve the brassy tones in blonde hair. The shampoo formula also increases shine and helps your color to last for longer[9].

When it comes to using the Purple Shampoo, apply it to the brassy areas for 2-3 minutes. Function of Beauty reviews indicate that you may want to apply it for longer if the brassiness is prominent. Rinse all of it out and then add a Function of Beauty Conditioner to seal the deal. 

Function’s Purple Shampoo comes in two sizes: 8 oz ($30) and 16 oz ($37). 

Function of Beauty Leave-in Treatment Review

Function of Beauty Leave-in Treatment is also individually formatted to meet the hair goals you’ve set your sights on. With over 5,613 reviews at an average of 4.5 stars, it’s easy to see why people love this.

It’s ultra-lightweight and helps maintain healthy hair by smoothing, hydrating, and protecting for $20. It’s a great sidekick for shampoo and conditioner, plus we love that it’s a multi-use product.

When’s the best time to put in the leave-in treatment? Function suggests that you tousle it into your hair after your shower. It can go in either wet or dry.

Similar to the other hair products, it’s meant to fit you and your life, so you can use it on wash days, in between washes or for a touchup on the fly. The best part is you don’t have to rinse! It’s recommended for all hair types, so all locks are welcome. Tousle it in, and away you go!

Function of Beauty Hair Mask Review

You’ve heard of a face mask but have you heard of a hair mask? The Function of Beauty Hair Mask will pique your interest, either way. It’s an intensive deep conditioning treatment made with Japanese sake extract, argan oil, jojoba ester oil, and a blend of natural ingredients to complement your hair goals. 

Japanese sake extract[10] is an alcohol made from rice and water and has been tested within labs and on living organisms to show that it is an anti-melanogenic ingredient[11] that encourages hair growth and repair damage. The aforementioned study explores this ingredient in an ethanol extract of another organism. 

Jojoba ester oil has been proven to reduce dryness, moisturize and provide strength to damaged hair. This can be attributed to its performance as an emollient, due to its chemical composition as the product of transesterification of jojoba oil as described in this study[12].

The Hair Mask is designed for in-shower use and it gives you a lift in moisture, hydration and nourishment. It’s a ‘treat yoself’ kind of product. Coat your hair with the mask after shampooing and conditioning.

Make sure you get an even application from shafts to ends. For best results leave the mask in for the recommended time and use it once or twice per week. This Function of Beauty shower treatment is available in 7.5 oz bottles for $20.

Function of Beauty Hair Serum Review

We’ve seen a lot of great Function of Beauty hair products that can bring your mane to the next level, and the Hair Serum is the final touch. It smoothes away those flyaways, keeps that pesky frizz in place, and elevates your shine. The serum is 100% customizable and is blended of argan, jojoba, sunflower oils and a blend of natural ingredients. 

The serum is proven to reduce frizz by 70%, increase shine 26x more than untreated hair, improve detangling by 75%, and thermally protect hair from damage up to 400 degrees Fahrenheit. Seriously impressive. Function of Beauty Hair Serum comes in 3 oz for $25

When it comes to use, warm a small amount of the product in your hands. Apply the serum to damp or wet hair, then distribute the product evenly from mid-shafts to the ends using your fingers. Be sure to avoid the roots and don’t rinse out! Lastly, style it and enjoy.

Function of Beauty Subscription Review

Function of Beauty Hair Review

Becoming a Function Plus Member with a Function of Beauty Subscription has its perks. We’ve outlined them here so that you can decide if being a member is right for you:

  • You can choose your delivery schedule and get online deliveries of your personalized formulas (every month, 2, 3, or 6 months)
  • It’s easy to make changes to your formula
  • Free shipping, access to exclusive and past limited-edition colors and fragrances
  • Invitations to help test-drive new products (I’d happily be their guinea pig!)
  • Receive reminders a few days before your subscription order is set to be filled, so that you can make any updates to your formula, delivery date, or account details

Function of Beauty offers individual hair care, totally custom. You begin by taking the quiz and providing information about your hair as well as choosing colour, fragrance and the name of your formula. It’s easy to get started with a customized subscription.

Function of Beauty Hair Reviews: What Do Customers Think?

Function of Beauty Hair Review

After getting to know the products and the possibilities, it’s important to look into what customers were saying. .

Let’s start with the fact that Function of Beauty has over 73,000 five-star reviews, that’s a lot of happy customers!

One customer shared their experience and said the following:

I 100% enjoyed both these products, from the smell to how my hair felt. It also made my oily hair last longer without washing! One critique I have seen is that people not used to a natural shampoo found it oily, I myself chose oil control as one of the additions, this may help with that issue. Will be buying again!

Others frequently mentioned how their hair is left super soft, and hydrated after washing. One customers said that Function was the only product that they would use for their hair, and would continue to order their formulation without a single doubt.

One customer, Crystal, remarked that Function had done wonders, saying:

I have used their shampoos and conditioners for about half a year now. It has made such a difference in my hair that I have now started testing their face serum and I’m going to order custom body wash and lotion! I’m completely sold on this company from all the products I’ve tested so far. Will absolutely continue to recommend to others and use myself.

A constant compliment that customers noted by customers is that Function made their hair “squeaky clean.” The happy buyers loved the smell, thought the quality was excellent—higher than any drugstore products. 

Is Function of Beauty Haircare Worth It?

Function of Beauty Hair Review

With tens of thousands of happy customers, we believe Function of Beauty is worth a try. We recognize the careful process at Function of Beauty which accounts for individual goals and differences amongst customers. This allows for a more tailored solution for your needs.

One thing to note is how impressive the level of customization and natural ingredients used by Function of Beauty. Buy yourself a bottle, do it up just right and when you try it, take the time to see if it’s right for your needs.

Function of Beauty Promotions & Discounts 

Function of Beauty Hair Review

On the website, new customers can get 10% off their first order by using code ‘HBR10‘.

As an Ambassador member, you will benefit from the world-class science of the team of MIT engineers, cosmetic scientists and developers. All products are mindfully created to be as unique as you.

The Function of Beauty Ambassador Program is a unique referral rewards system. 

Where to Buy Function of Beauty Haircare

According to our Function of Beauty hair review, you can purchase their products through their website,, and Amazon.


Cancel Function of Beauty Subscription

Canceling the Function of Beauty subscription is a pretty easy process: After you login and visit the Account page:

  1. Login and go to the Account page
  2. Click Your Subscriptions
  3. Select Manage
  4. Click Cancel Subscription 

If you cancel after the order has been initiated, the cancellation will apply to the next delivery cycle. After cancelling your subscription, you’ll receive an email confirmation. If this email does not come within 24 hours, reach out so that Function of Beauty can help. 

Function of Beauty Shipping Policy

This Function of Beauty hair review sorts out the strengths and weaknesses of the system for you. From formulation to shipping, the creation process normally takes 7-9 business days. The team will send you a shipping notification with a tracking number once your package has shipped.  Below is an outline of the delivery time in relation to the countries available for shipping:

CountryDelivery Time
US11-14 days
Australia39-45 days
Canada31-39 days
Chile15-22 days
European Union32-36 days
Great Britain31-33 days
Hong Kong32-40 days
Iceland39-47 days
Israel34-35 days
Japan36-38 days
Mexico32-40 days
New Zealand31-37 days
Singapore9-12 days
Switzerland34-40 days
Taiwan30-32 days

There may be taxes or duties depending on where your package is being sent, according to the investigation of our Function of Beauty hair review. If you live in Australia, Canada, EU, Hong Kong, Mexico, New Zealand or Great Britain, you’ll receive your package with no further duties or taxes than those you pay at checkout. 

If your location is Iceland, Israel, Norway, Singapore, Switzerland, Taiwan or the United Arab Emirates, you may incur additional duties or taxes as per your country’s customs laws. 

Function of Beauty Return Policy

In our Function of Beauty hair review, we learned about the Happy Hair Guarantee. The team is passionate about creating products that match your unique characteristics and live up to your standards. After trying the shampoo at home, if it’s not hitting the bar, let them know so that they can improve the product to meet your needs. 

Reach out to the team at [email protected] and express your concern within 30 days of receiving your first order. The team will do its best to resolve the issue, and if your concerns are not addressed with a free one-time reformulation, you will receive a full refund within 30 days of delivery of your first order. Note that if you choose the one-time free reformulation, you will not receive a refund for the original purchase. 

Contact Function of Beauty  

If you have a question or concern on your mind that wasn’t addressed in this Function of Beauty hair review: visit, select your inquiry, and fill out the form including your name, email and message. Then click ‘submit’ and a team member will get back to you soon.

Looking for more hair color options? Check out the extensive Madison Reed collection and XMondo Hair.

Article Sources

[1] Grice, E. A., & Segre, J. A. The skin microbiome. Nature reviews U.S. National Library of Medicine Microbiology, 9(4), 244–253
[2] Monselise, A., Cohen, D. E., Wanser, R., & Shapiro, J. What ages hair? U.S. National Library of Medicine International journal of women's dermatology, 1(4), 161–166
[3] Constantinou, A., Kanti, V., Polak-Witka, K., Blume-Peytavi, U., Spyrou, G. M., & Vogt, A. The Potential Relevance of the Microbiome to Hair Physiology and Regeneration: The Emerging Role of Metagenomics U.S. National Library of Medicine Biomedicines, 9(3), 236
[4] Smith, R. W., & Keller, K. L. If all their products seem the same, all the parts within a product seem the same too: How brand homogeneity polarizes product experiences ScienceDirect International Journal of Research in Marketing, 38(3), 698–714
[5] Araújo, L. A., Addor, F., & Campos, P. M. Use of silicon for skin and hair care: an approach of chemical forms available and efficacy U.S. National Library of Medicine Anais brasileiros de dermatologia, 91(3), 331–335
[6] Sharmeen, J. B., Mahomoodally, F. M., Zengin, G., & Maggi, F. Essential Oils as Natural Sources of Fragrance Compounds for Cosmetics and Cosmeceuticals U.S. National Library of Medicine Molecules (Basel, Switzerland), 26(3), 666
[7] Kirchhof, M. G., & de Gannes, G. C. The health controversies of parabens Skin therapy letter, 18(2), 5–7
[8] Bom, S., Fitas, M., Martins, A. M., Pinto, P., Ribeiro, H. M., & Marto, J. Replacing Synthetic Ingredients by Sustainable Natural Alternatives: A Case Study Using Topical O/W Emulsions U.S. National Library of Medicine Molecules (Basel, Switzerland), 25(21), 4887
[9] Battistella, C., McCallum, N. C., Gnanasekaran, K., Zhou, X., Caponetti, V., Montalti, M., & Gianneschi, N. C. Mimicking Natural Human Hair Pigmentation with Synthetic Melanin U.S. National Library of Medicine ACS central science, 6(7), 1179–1188
[10] Hwang, J.-A., Goh, M.-J., Kim, E.-J., Lee, M.-R., Park, N.-H., Na, Y.-J., Cho, J.-C., & Lee, H.-K. Identification of Sake Extract as a New Anti-melanogenic Ingredient by in vitro and Clinical Trials SAGE Journals Natural Product Communications
[11] Lee, J. Y., Cho, Y. R., Park, J. H., Ahn, E. K., Jeong, W., Shin, H. S., Kim, M. S., Yang, S. H., & Oh, J. S. Anti-melanogenic and anti-oxidant activities of ethanol extract of Kummerowia striata: Kummerowia striata regulate anti-melanogenic activity through down-regulation of TRP-1, TRP-2 and MITF expression U.S. National Library of Medicine Toxicology reports, 6, 10–17
[12] Miwa, T.K. Jojoba oil wax esters and derived fatty acids and alcohols: Gas chromatographic analyses SpringerLinks J Am Oil Chem Soc 48, 259–264 (1971)

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