Written by the Skymedic UK clinical team. Skymedic formulations are developed in ISO 13485-certified laboratories in Barcelona. This guide is educational and does not replace professional medical advice — always consult a qualified practitioner.
"Exosome therapy for hair loss" is one of the fastest-growing searches in UK aesthetics — but there's a critical regulatory point most articles skip. This guide explains what exosomes do for hair, the important MHRA position on injectable exosomes in the UK, and the legal topical and device-based alternatives professionals and consumers can actually use.
What are exosomes and how do they help hair?
Exosomes are tiny vesicles that carry signalling molecules — growth factors, peptides and genetic messengers — between cells. In the context of hair, the interest is their ability to signal dermal papilla cells, the cells at the base of the follicle that drive the hair growth cycle. The goal of exosome-based hair treatments is to support a healthier growth environment for thinning hair.
The MHRA position: injectable exosomes are not licensed in the UK
This is the part that matters most. In the UK, injectable exosome products for hair loss are not licensed by the MHRA (Medicines and Healthcare products Regulatory Agency), and regulators have warned against their use as unlicensed treatments. That means a clinic offering injected exosomes for hair is operating in a grey — and potentially non-compliant — area.
The practical takeaway for UK practitioners and consumers: focus on topical exosome products and licensed devices, which can be used legally and safely, rather than injectable protocols that carry regulatory and safety risk.
Legal alternatives that work
1. Topical exosome serums
Topical exosome formulations can be applied to the scalp — often alongside microneedling to improve absorption — as part of a professional or home protocol, without the regulatory issues of injectables. Skymedic's Exo Ox Hair Serum is a plant-derived exosome formulation developed for exactly this use.
2. Low-level laser therapy (LLLT) devices
LLLT (red-light) devices are a well-established, home-usable approach to supporting hair density. They can be combined with topical treatments in a layered routine. Explore Skymedic's photobiodynamic therapy devices.
3. Supporting actives
Peptides (including copper peptides), and a healthy scalp-care routine, all support the environment topical exosomes work in.
Building a topical exosome hair protocol
- Cleanse: start with a clean, product-free scalp.
- Micro-channel (professional): microneedling can improve absorption when performed by a trained practitioner.
- Apply the exosome serum to the thinning areas as directed.
- Add LLLT on a regular schedule per the device instructions.
- Be consistent: hair cycles are slow — give any protocol several months.
Exosomes vs other hair-loss options
For clinics weighing regenerative hair options, our hair restoration mesotherapy vs exosomes + microneedling comparison and the full professional hair loss treatments UK guide go deeper into protocols and products.
Frequently asked questions
Are exosome injections for hair legal in the UK?
No. Injectable exosome products for hair loss are not licensed by the MHRA in the UK, and regulators have warned against their use. Topical exosome serums and licensed LLLT devices are the compliant alternatives.
Do topical exosome hair serums work without injections?
Topical exosome serums are designed to be applied to the scalp, often with microneedling to aid absorption. They avoid the regulatory issues of injectables while still delivering exosome signalling to the scalp.
How long until I see results from an exosome hair protocol?
Hair growth cycles are slow. Most protocols need several months of consistent use before results become visible.
Can I use exosome hair treatments at home?
Yes — topical exosome serums and home-use LLLT devices are designed for at-home routines. Any professional in-clinic microneedling should be performed by a qualified practitioner.
