Nettle: The Wild Beauty for Combination Skin

Often overlooked on paths, nettle is one of the most mineral-dense plants in our temperate regions. Dried and then extracted, it loses all its sting and becomes a refreshing ingredient for the T-zone and scalp. This page provides its botanical identity card, five cosmetic forms and their reference dosages, a raw material purchasing guide, and our three-minute home ritual.

• Two species, one name. The common nettle grows up to 1.50 meters; its cousin, the burning nettle (Urtica urens), rarely exceeds 60 cm. Both have the same stinging hairs.
• A cosmetic extract doesn't sting. The sting combines two mechanisms — the siliceous hair breaking and the compounds it releases — and neither survives drying, heat, or extraction.
• Five forms, five dosages. Hydrosol 20 to 100% of the aqueous phase, glycerin extract 2 to 5%, dry extract 0.5 to 2%, micronized leaf 1 to 3%, oily macerate 5 to 20% of the oily phase.
• Our homemade ritual. 3 minutes flat, twice a week, about fifteen drops of lotion on the T-zone — timed protocol further down this page.

The common nettle grows in dense colonies on nitrogen-rich soils, at the edge of woods and along paths, throughout most of Europe. An adult clump reaches 100 to 150 centimeters. The burning nettle (Urtica urens), on the other hand, rarely exceeds 60 centimeters and flowers earlier in the season. Its flowers, like those of its larger cousin, remain discreet and greenish: these flowers have no cosmetic use. Only the leaves and, more rarely, the roots are relevant here.

What strikes you first are the hairs. Each leaf has thousands of them: fine needles laden with silica, brittle at the slightest touch, which release the compounds responsible for the sting when broken. Neither the siliceous tip nor its contents withstand drying, heat, or maceration. Therefore, no cosmetic raw material — hydrosol, extract, micronized leaf — retains this sting: this is the first thing to know when approaching the plant without apprehension.

In France, cosmetic harvesting focuses on young shoots from wild picking or organic farming, before flowering, between April and June; roots are dug up in autumn. Both species are harvested and extracted in the same way, and the common nettle simply dominates supplies because it yields more material per plant.

1. Cultivation. Prioritize batches from organic farming, harvested in France or elsewhere in Europe, from young leaves. A verifiable label provides information on cultivation — never on the concentration of the finished product.
2. Manufacturing. Low-temperature drying and gentle extraction preserve the leaf's components. Overheating turns it brown: the quality of an extract can be read from its color as much as from its label.
3. Packaging. Amber glass, protected from light, significantly extends the shelf life of a hydrosol. For a comparable price, it's better to get a small, well-packaged size than a large transparent bottle that you won't finish in time.
4. Label. On the INCI list, the order is descending: the earlier the plant appears, the more it is present. It is listed under its international code name, never in French.

A fifth, often overlooked, indicator: the date. A hydrosol keeps for 6 to 12 months after opening, but this counter is only meaningful if the bottle hasn't already spent two years in a warehouse. A serious raw material should bear its harvest or distillation year, not just a distant expiration date.

Synthesis work dedicated to the Urtica genus describes an unusually dense leaf: minerals (calcium, magnesium, potassium, iron), silicon, flavonoids such as quercetin and rutin, chlorophyll, and carotenoids. It is these combined components, rather than a single star molecule, that make the extract cosmetically interesting — a complete plant profile rather than an isolated active ingredient.

From a regulatory standpoint, the European Commission's CosIng database lists two declared functions for the leaf extract: skin conditioning and tonic. It is therefore an ingredient for comfort and freshness, whose use falls under daily care and not a therapeutic promise.

Once a week — replace step 2 with a mask: 1 tablespoon of micronized leaf + 2 spoons of hydrosol, leave on for 10 minutes, rinse with lukewarm water.

On the scalp — apply the same lotion parting by parting, 10 to 15 sprays, without rinsing, the evening before shampooing.

1. Applying lotion to an uncleaned face. The day's film acts as a barrier; step 1 of the ritual is not optional.
2. Accumulating purifying active ingredients on the same evening. Nettle, clay, and exfoliating acid take turns — they do not add up.
3. Confusing micronized leaf powder and dry extract. These are two distinct materials, not two names for the same thing: whole leaf powder is dosed at 1 to 3%, while dry extract, which is much more concentrated, is dosed at 0.5 to 2% — and it colors the formula green starting from 1%.
4. Forgetting an opened bottle. A hydrosol kept in an amber bottle, in a cool, dark place, lasts 6 to 12 months; a homemade preservative-free lotion lasts 5 to 7 days in the refrigerator.