Function of Beauty Promo Codes - December 2025

Function of Beauty gift cards

A Function of Beauty gift card is a simple way to give someone a personalised haircare treat without guessing their formula or fragrance. You can choose the amount and send it electronically with a message. For those who prefer a ready-made option, you can schedule delivery of a curated gift set on a date that suits you.

Refer a friend to earn store credit

If you already shop with Function of Beauty, you can share your unique referral link. When a friend places their first order through your link, you receive store credit to use on a future purchase. Your friend benefits too, making it a straightforward way for both of you to save.

Hair goals, inspiration and tutorials

Function of Beauty’s YouTube channel and blog offer guides on hair types, routine building and product selection. Using these resources can help you choose the right formula first time, reducing the chance of buying products that don’t suit your hair needs.

Try smaller sizes if you’re new to personalised products

If you’re unsure whether a formula is right for you, starting with a smaller size reduces the cost of trying it out. Once you know which blend suits your hair, you can switch to larger sizes for better long-term value.

1. Choose the offer you want to use
2. Click on it to reveal the promo code
3. Copy it. Follow through to the Function of Beauty website
4. Take the quiz to find out your hair type
5. Add your chosen products to your cart
6. Paste the code in the promo box box
7. Hit apply
8. Checkout as normal