Ingredient review

Mulberry Stem Extract

INCI: Morus Bombycis Stem Extract

A gentle botanical extract that may help calm skin and fight free radicals, but research is still early.

beautyskincareantioxidant

In plain English

This is an extract taken from the stems of a specific type of mulberry plant. In skincare, it's used to provide antioxidant protection (helping defend skin from environmental damage) and to soothe irritation. It's a mild ingredient, unlikely to cause problems for most skin types, but it's not as well-studied as some other plant extracts.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 5

Potentially useful with some tradeoffs

The evidence base is still emerging, so marketing claims deserve extra caution.

Risk flags are low for most users, though the finished product can still irritate.

Source
natural
Evidence
emerging
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Mulberry Stem Extract is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Mulberry Stem Extract.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

emerging

The ingredient may be promising, but claims should be treated more cautiously.

What it is

A natural extract derived from the stems of Morus bombycis, a species of mulberry. It contains various plant compounds like flavonoids and phenolic acids that can benefit the skin.

How it works

It works by donating electrons to neutralize free radicals (unstable molecules that can damage skin cells), and by reducing the production of inflammatory signals in skin cells, which helps calm redness and irritation.

Pros

Gentle antioxidant

Provides a mild defense against free radicals without the irritation that some stronger antioxidants can cause, making it suitable for sensitive skin.

Soothing potential

May help calm redness and inflammation, which is beneficial for those with easily irritated or reactive skin.

Cons and cautions

Limited research

Most evidence comes from lab studies, not large human trials, so its real-world effectiveness is not fully proven.

Rare allergy risk

While very uncommon, people with plant allergies (especially to mulberry or fig family) could experience a reaction.

Best for

  • Anyone looking for a gentle antioxidant ingredient
  • Those with sensitive or reactive skin seeking soothing ingredients

Use caution if

  • Individuals with a known allergy to mulberry or related plants

Usage tips

Use in a product that stays on the skin, like a serum or moisturizer, to allow the extract time to work.
Pair with other antioxidants like Vitamin C or E for a broader defense against environmental damage.

Safety summary

Considered safe for topical use with a low risk of irritation. Allergic reactions are rare. As with any new ingredient, a patch test is recommended for those with very sensitive skin or known plant allergies.

Research notes

Research is primarily in vitro (lab studies) showing antioxidant and anti-inflammatory activity. Human studies are lacking, so the evidence level is considered emerging.

Common label clues

Typical concentration
0.5% to 2%
Regulatory status
Generally recognized as safe for use in cosmetics in the US and EU, with no specific restrictions beyond standard cosmetic safety requirements.
Common uses
Serums, Moisturizers, Toner
Environmental note
Mulberry plants are widely cultivated and the stems are often a byproduct of fruit or leaf harvesting, making this a relatively sustainable ingredient.

Good to know

  • The extract is often used at low concentrations (under 2%) as a supporting ingredient rather than a star active.
  • It is not the same as mulberry fruit extract, which is more commonly used for brightening.

Common questions

What is Mulberry Stem Extract in beauty products?

This is an extract taken from the stems of a specific type of mulberry plant. In skincare, it's used to provide antioxidant protection (helping defend skin from environmental damage) and to soothe irritation. It's a mild ingredient, unlikely to cause problems for most skin types, but it's not as well-studied as some other plant extracts.

What does Mulberry Stem Extract do in a beauty product?

It works by donating electrons to neutralize free radicals (unstable molecules that can damage skin cells), and by reducing the production of inflammatory signals in skin cells, which helps calm redness and irritation.

Is Mulberry Stem Extract safe for most people?

Considered safe for topical use with a low risk of irritation. Allergic reactions are rare. As with any new ingredient, a patch test is recommended for those with very sensitive skin or known plant allergies.

Who should be careful with Mulberry Stem Extract?

Individuals with a known allergy to mulberry or related plants

Research sources

CosIng - European Commission databaseOpenPubMed - Antioxidant activity of Morus speciesOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.