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Feuchtigkeitspflege

Glycerin: The Underrated Moisturizing Champion

Bonsana Redaktion
Glycerin: A crystal-clear, viscous drop of glycerin travels from a glass rod to a gray platform

Ingredient Glossary · G

INCI: Glycerin

Glycerin has an image problem: too old-fashioned, too inexpensive, too unspectacular. Yet hardly any other active ingredient in skincare is as well-documented—the evidence base is stronger than for almost anything else heavily advertised on product packaging. It’s time to restore the reputation of this unsung champion of moisture retention.

Profile
Research
Effective against dry skin, tightness, and rough patches
Skin Type All, including very sensitive skin
Concentration 3–10% in finished products
Routine: Morning & evening
Adjustment period: None required

What is glycerin?

Glycerin is a sugar alcohol and a so-called humectant—a moisture-retaining agent that attracts water and locks it into the upper layers of the skin. The key point: Glycerin is not a foreign substance. It is a natural component of the Natural Moisturizing Factor (NMF), which the skin uses to regulate its own moisture levels. Today, cosmetic glycerin is primarily derived from plant oils.

There’s a simple reason why glycerin is found in almost every cream: It works, is extremely well-tolerated, and is inexpensive to produce. If it appears near the top of the INCI list, that’s not a sign of a cheap formula—but rather of one that relies on one of the most thoroughly researched moisturizing ingredients available.

Effect: What the Evidence Shows

It gets a full five bars here—and that’s the exception in this encyclopedia. Decades of research and numerous comparative studies consistently show that glycerin reliably improves skin hydration, supports the regeneration of the skin barrier, and makes rough skin smoother. In direct comparison tests, it regularly performs at least as well as significantly more expensive moisturizing agents. To put it fairly: Hyaluronic acid is the marketing star, while glycerin is the quiet worker—and the evidence shows the worker is better.

Usage & Combination

Glycerin fits into any routine, morning and night, and works in any product form—from cleansers to serums to creams. You’ll get the most out of it by applying glycerin-based skincare to slightly damp skin and finishing with a cream that locks in moisture.

Good Combinations

✓ Hyaluronic acid & polyglutamic acid – multi-layered hydration

✓ Ceramides – glycerin brings in the water, ceramides lock it into the skin

✓ Retinol & acids – glycerin helps soothe irritation

Note

! Pure glycerin from the pharmacy must be diluted—undiluted, it can draw moisture out of the skin

Myth debunked: “Glycerin dries out the skin”—this only applies to nearly pure glycerin in very dry air. In finished products containing the standard 3–10%, studies show the opposite: increased skin hydration and a more stable skin barrier.

Glycerin in the BONSANA lineup

Available in the shop

Moisture That Really Works

Creams and skincare products with glycerin, hyaluronic acid, and more—tested products, ready to ship from our warehouse in Switzerland.

To the moisturizing care section →

Frequently Asked Questions About Glycerin

Is glycerin good for the skin?

Yes—and there’s exceptionally strong evidence to support this. Glycerin binds water in the upper layers of the skin, supports the skin barrier, and is suitable even for very sensitive skin. It’s part of the skin’s own moisture system and is therefore very well tolerated.

Does glycerin dry out the skin?

Only in one specific case: Nearly pure, undiluted glycerin can draw water out of the skin in very dry air. This doesn’t happen in finished products containing the typical 3–10% concentration—in those products, glycerin has been proven to increase skin moisture.

What skin types is glycerin suitable for?

All skin types. Dry skin benefits the most, oily skin appreciates the light, oil-free hydration, and sensitive skin almost always tolerates glycerin without any issues. There’s hardly a more straightforward active ingredient.

Is glycerin in cosmetics vegan?

Mostly yes: Today, cosmetic glycerin is primarily derived from plant oils. A “vegan” label on the product provides assurance—the SKINCYCLOPEDIA products shown here are declared to be vegan.

Keywords: Feuchtigkeitspflege Glycerin Wirkstoff-Lexikon
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