Last updated 9 August 2026 · Originally published 2 August 2021
Let’s deal with the important bit first, because a lot of summer skincare marketing is vague about it.
CBD is not sunscreen. It has no SPF, it does not block UV rays, and no CBD product should be relied on to stop you burning. If a moisturiser containing CBD also contains zinc oxide or another filter, the filter is doing the protecting.
With that established, the more interesting question is whether CBD helps after you’ve burnt.
What a sunburn actually is
It isn’t a heat burn. UV radiation damages the DNA in your skin cells, and what you feel afterwards is your immune system responding — redness, heat, swelling, soreness. That’s inflammation doing its job.
Which is why CBD comes up. It has shown anti-inflammatory effects in laboratory research, and skin has its own endocannabinoid signalling system.[2] That gives the idea a plausible starting point.
What the research shows
Encouraging results in cells and mice. Nothing yet in people.
Laboratory studies have found CBD limits some of the cell damage UV causes. In one 2022 study, a 5% CBD cream reduced signs of UVB damage in mouse skin — less redness and less inflammation.[1]
Worth being clear about what that does and doesn’t mean. The CBD wasn’t blocking the UV or acting as a sunscreen. These studies looked at how cells and mouse skin responded to UV damage, not at whether CBD stopped the radiation reaching them in the first place.
And it wasn’t a test of treating an existing sunburn. The mice were given repeated controlled UVB exposure under laboratory conditions. Mouse skin isn’t human skin, 5% is far above most cosmetics, and nobody has tested whether CBD lotion on a sunburnt person does anything a plain moisturiser wouldn’t.
So will it help my sunburn?
Possibly, a bit, and probably not for the reason on the label.
A cool bath or shower followed by a gentle, unfragranced moisturiser genuinely helps. The moisturiser holds water in the damaged skin and eases the tight, itchy phase. If your CBD lotion is a good moisturiser, it will do that.
Whether the CBD adds anything on top is unproven. It might. Nobody has shown it.
What’s worth avoiding is a product chosen because it has CBD in it over one that’s simply better formulated for burnt skin. Alcohol-heavy gels and heavily fragranced lotions sting on sunburn regardless of what else is in them.
When to stop reaching for lotion
Sunburn is a skin injury, and a bad one needs more than a moisturiser. See a doctor if you have blistering over a large area, fever or chills, dizziness or confusion, or signs of infection. Severe sunburn can cause dehydration and, occasionally, hospital admission.
Sunburn on a baby or young child always warrants medical advice.
The summer version, briefly
Everything above applies to CBD summer skincare generally.
Protection comes from sunscreen, shade and covering up. Nothing else.
Moisturising matters, and sun exposure dries skin out, so a good moisturiser is worth using — with or without CBD. If yours has CBD in it and you like it, carry on.
Lips need SPF too. They have less melanin than the rest of your face and burn easily. A CBD lip balm without SPF is a moisturiser; you want one with a filter in it.
None of this is medical advice. For persistent skin problems or severe burns, see a doctor.
For more, see does CBD work on your skin?, our guide to CBD cosmetics, or browse Skin & Beauty.
References
- Li Y, Hao D, Wei D, et al. Photoprotective effects of cannabidiol against ultraviolet-B-induced DNA damage and autophagy in human keratinocyte cells and mouse skin tissue. Molecules. 2022;27(19):6740. doi:10.3390/molecules27196740
- Baswan SM, Klosner AE, Glynn K, et al. Therapeutic potential of cannabidiol (CBD) for skin health and disorders. Clinical, Cosmetic and Investigational Dermatology. 2020;13:927–942. doi:10.2147/CCID.S286411
About this article
Substantially rewritten in August 2026, combining our earlier reporting on CBD and sun exposure. This update states plainly that CBD is not sun protection, sets out what the preclinical research does and doesn’t show, and adds guidance on when sunburn needs a doctor. With earlier reporting by Lisa Rennie.
