Sangre de Grado: An Amazonian Answer to Summer Skin

July 21, 2026

Every July we get a version of the same message: someone scraped a knee on a hike, or stayed out at the beach two hours too long and the back of their neck is glowing pink. They ask what we'd actually reach for. The honest answer is usually a small jar of dark red resin that looks like it wandered out of a 17th-century apothecary cabinet. In a way, it did.

Sangre de Grado, "blood of the dragon," comes from Croton lechleri, a tree native to the Peruvian and wider Amazonian rainforest. Score the bark and a thick, wine-dark latex weeps out within seconds, which is exactly where the name comes from. Communities across Peru's Loreto and Ucayali regions, along with other Amazonian groups, have been collecting this sap for generations and using it on cuts, insect bites, and irritated skin long before anyone put it in a bottle with a label.

Spanish chroniclers wrote about "sangre de drago" as far back as the 16th century, describing indigenous use of the sap on wounds during expeditions into the rainforest. That kind of written record is unusual for a plant remedy. Most traditional botanicals survive only as oral history, but this one shows up in colonial-era accounts precisely because European travelers found it notable enough to document.

What the resin actually contains

The compound that shows up most often in the research is taspine, alongside a group of proanthocyanidins that give the sap its color and much of its astringent bite. Lab studies on these compounds have found antimicrobial and anti-inflammatory activity, and there's one genuinely notable data point worth mentioning: crofelemer, a drug the FDA approved in 2012 for HIV-associated diarrhea, is purified from this same Croton lechleri latex. That's a real pharmaceutical outcome, not folklore.

What it isn't, at least not yet, is a clinically studied sunburn treatment. We haven't found controlled human trials testing Sangre de Grado specifically on sunburned skin, and we're not going to pretend otherwise. What exists is a long tradition of topical use for scrapes and general skin irritation, plus lab-level evidence for the compounds involved. That's a meaningfully different claim than "this fixes sunburn," and we'd rather say that plainly than dress it up.

Croton lechleri isn't farmed in rows, either. It's wildcrafted, meaning harvesters tap trees growing in their natural forest setting rather than a plantation, which is part of why sourcing it responsibly matters. Ours comes with a small percentage of proceeds directed back to Amazon conservation efforts, since a resin like this is only sustainable if the forest that produces it stays standing.

How people actually use it

We sell the resin in its raw form, which means it isn't ready to dab on straight out of the jar. Most customers dissolve a small piece, about the size of a pea, into a tablespoon of rubbing alcohol or witch hazel and let it sit for a day or two, shaking occasionally, until it turns into a deep red liquid. Others simmer a small amount in warm water to loosen it into a paste. Either way, apply a thin layer to clean, unbroken skin; a dime-sized amount goes further than people expect, since the resin is concentrated.

Patch test on your inner forearm first and wait 24 hours. Some people notice the astringent quality feels tightening on already-tender skin, which isn't for everyone, especially on a fresh sunburn where the skin is inflamed and sensitive to begin with. If your sunburn is blistering, covers a large area, or comes with fever or chills, that's a step past what any topical botanical should be handling. See a doctor.

A few cautions worth repeating

Don't apply this to open wounds, deep cuts, or broken blisters. Skip it if you have a latex allergy, since some people report cross-sensitivity. If you're pregnant or nursing, talk to your doctor before using Sangre de Grado in any form, topical or otherwise. And if a burn looks serious, this resin is not a substitute for proper wound care.

For everyday scrapes, bug bites, and skin that's a little irritated after a long day outside, it's a reasonable thing to have in a drawer. For anything more serious, it's a supplement to good sense, not a replacement for it. Pair it with the basics people tend to skip, shade, water, and a vitamin C-rich diet; our Camu Camu powder has one of the highest natural vitamin C concentrations of any fruit, which matters for skin repair generally, though that's a nutrition angle, not a sunburn cure either.

You can browse the Dragon's Blood resin directly, or see how it fits alongside other traditional remedies in our general wellness collection.