Mariguanol Side Effects: What to Know and Who Should Avoid It

If you're about to use Mariguanol for the first time — or someone handed you a jar and you want to know what you're putting on your skin — this is the official guide from the people who make it.

Mariguanol is a topical balm, applied to the skin, formulated with CBD, other phytocannabinoids and menthol. It is a personal-care product, not a medicine, and it is not intended to diagnose, treat or cure any condition. What follows is about safe use, not about what it does for any ailment.

The sensation is not a side effect

The first thing almost everyone notices is intense cold, sometimes followed by warmth, sometimes by a tingle or a mild burning feeling. That is the menthol doing exactly what menthol does: acting on the nerve endings in your skin that report temperature.

Nothing is actually cooling or heating. The sensation is real, the temperature change is not. It usually settles within a few minutes.

How strong it feels depends on three things: how much you applied, how thin or sensitive the skin is in that spot, and whether you applied it right after a hot shower, which makes everything more intense. We go into the detail in why Mariguanol feels cold and why it stings.

The practical takeaway: start with less than you think you need. Most people who find it overwhelming simply used too much.

What to watch for

As with any topical product, some skin may react. Things worth paying attention to:

• Redness or irritation that doesn't settle. A flush right after applying is normal; persistent irritation is not.
• Burning that gets worse rather than better over the first few minutes.
• Any reaction on sensitive skin. If your skin reacts easily to cosmetics or topicals, test a small patch on your forearm first and wait a day.

If any of that happens, wash the area with soap and water and stop using it. If something concerns you, talk to a healthcare professional — we can give you product information, not medical advice.

Where not to apply it

• Not on broken skin. No wounds, cuts, scrapes, burns or irritated areas.
• Not near the eyes, and not on mucous membranes. Wash your hands after applying; menthol transferred by hand to the eyes is unpleasant.
• Not under occlusion — don't wrap or bandage the area after applying.

Who should not use it

• Anyone under 18. The product is for adults.
• Anyone pregnant or breastfeeding. Not recommended.
• Anyone with a known sensitivity to menthol or to any of the ingredients.

If you're under medical treatment, mention it to your doctor before adding any new topical to your routine. Our full list of precautions is on the safe use page and in precautions for topical CBD.

Does it have THC? Will it affect me?

No. Mariguanol is formulated around CBD and other non-intoxicating phytocannabinoids, not THC. It does not produce a high and does not alter perception.

On drug testing: standard panels screen for THC metabolites, not CBD, but panels and thresholds vary by laboratory and we are not in a position to make promises about a specific test. We lay out what is known in can a CBD balm show up on a drug test?.

How to use it with the least friction

A small amount, massaged into clean, intact skin. Wash your hands afterwards. Give it a few minutes before putting clothes on. The step-by-step is in how to apply a CBD balm, and the ingredient list is on the ingredients page.

Frequently asked questions

Is the burning sensation normal?

A cold rush and a mild burn in the first minutes are the expected menthol effect. Burning that intensifies or doesn't settle is not — wash it off.

Can I use it every day?

Most people use it as part of a routine rather than on a schedule. Keep amounts small and apply to healthy skin.

Can I shower after applying it?

You can, but washing removes the product and the sensation with it. Most people apply after showering.

Can children use it?

No. It is for adults over 18.

Does it interact with other topicals?

Avoid layering different sensation products on the same area — that is the most common cause of irritation we hear about.

Mariguanol is a topical personal-care product. It is not a medicine and is not intended to diagnose, treat or cure any condition. For adults over 18. Not for use during pregnancy or breastfeeding.