FNCTION Promo Code 3 August 2026

About FNCTION

Fnction.co is the online store for F+NCTION, a British wellness brand positioned at the intersection of neuroscience, sleep science and clinical nutrition. The company behind the site, FNCTION LTD, is registered in Harpenden, England. Its flagship product, CALM, is an evening cacao-style drink formulated with hydrolysed marine collagen peptides, ashwagandha root extract, magnesium bisglycinate, L-theanine, reishi, chamomile, passionflower and B vitamins, designed to support recovery and wind-down as part of a nightly ritual. The range also includes a FOCUS supplement and an accompanying frother. Products are sold in various formats, including 7-day, 15-day and 30-day supplies, as well as a starter pack. The brand has been featured in UK publications such as Tatler, Stylist, Get The Gloss and the Daily Express, and is stocked in a number of wellness and aesthetic clinics across Central London.

Is there a money-back guarantee on FNCTION?

Yes. FNCTION offers a 30-day money-back guarantee on a customer's first order. To qualify, the refund request must be made within 30 days of receipt, relate to a first-time purchase, and be accompanied by proof of purchase such as an order number or receipt. Customers may be asked to return any unused portion of the product, and shipping costs are not refundable. Requests are handled by the support team, who aim to respond within three business days.

What happens if an item arrives damaged?

Customers who receive a damaged or defective product are asked to contact the support team within seven days of delivery. A replacement is then sent at no additional cost, provided the request falls within this window.

Does FNCTION offer discounts for subscribing?

FNCTION runs a subscription service that gives customers a discount of 30% off every subscription order compared with a one-off purchase. Subscription orders are also billed automatically according to the frequency chosen at checkout, with a notification sent ahead of each renewal.

Is free delivery available on FNCTION?

Free delivery is included on all subscription orders. This applies for as long as the subscription remains active, alongside the reduced subscription pricing.

Can a subscription be paused or cancelled?

Subscriptions on FNCTION are designed to be flexible. Customers can pause their subscription, skip an upcoming delivery, or cancel altogether at any time before the next billing date. These changes can be made through a customer account or by contacting the support team directly by email.

What are the benefits of joining the FNCTION mailing list?

Signing up to the FNCTION newsletter keeps customers informed about new product launches, science-led updates from the brand, and forthcoming developments across the F+NCTION range. Sign-up is available directly from the website by entering an email address.