All Ingredients
50

Coumarin

Moderate

Quick verdict

High concern

Coumarin skin safety dashboard

Coumarin scores 50/100 across 2 product analyses. The most important acne and irritation checks are summarized first.

Comedogenic rating

4/5

High pore-clogging risk signal for acne-prone skin.

Fungal acne concern

Review

Review the full formula before using on Malassezia-prone skin.

Pregnancy concern

Review

Ask a clinician before using during pregnancy or nursing.

Skin types to avoid

Acne-prone, Oily, Sensitive

Based on pore-clogging and irritation risk signals.

What is Coumarin and why is it used?

We're still generating a detailed description for Coumarin. Check back shortly - or scan a product containing this ingredient to speed things up.

Will Coumarin clog my pores? (Comedogenic Rating)

Comedogenic Risk: 4/5

Coumarin has an estimated comedogenic risk of 4/5 based on GlowLens ingredient scoring across 2 product analyses. A higher number signals a stronger pore-clogging tendency for acne-prone skin. This is informational, not medical advice.

Known Side Effects and Allergies: how concerning is Coumarin?

Moderate

Coumarin currently scores 50/100, which places it in a moderate-concern band overall. The main practical consideration is skin irritation, sensitivity, or breakouts in formulas where it appears alongside other potentially irritating ingredients. This is informational, not medical advice.

Is Coumarin safe for pregnancy?

While our analysis gives Coumarin a safety score of 50/100 with a medium concern level, we recommend consulting your healthcare provider about any cosmetic ingredients during pregnancy or nursing. GlowLens provides general safety assessments - pregnancy-specific advice should come from your doctor or midwife.

Final Verdict: who should be most cautious with Coumarin?

Acne-prone, oily, and reactive skin types may want to be more cautious with Coumarin, since it carries a stronger pore-clogging signal. Other skin types generally have less to weigh. This is informational, not medical advice.

How we rate this ingredient

Rating sourced from official regulatory and scientific databases.Confidence: HighLast reviewed Jun 13, 2026
2 products analyzed containing CoumarinAnalyze a new product

Found in 2 Products

Phlur Vanilla Skin Body Oil - contains Coumarin
50

Phlur Vanilla Skin Body Oil

medium

A fragrance component and known allergen that must be declared on labels for safety.

Kérastase Gloss Absolu Glaze Drops Hair Oil - contains Coumarin
50

Kérastase Gloss Absolu Glaze Drops Hair Oil

medium

A fragrant compound with a sweet, vanilla-like scent, recognized as a potential allergen for sensitive skin.

Showing all 2 of 2 products

Frequently Asked Questions

What is Coumarin and why is it used?
We're still generating a detailed description for Coumarin. Check back shortly - or scan a product containing this ingredient to speed things up. Across 2 products in our database, Coumarin appears in various formulations. Use our free skincare ingredient checker to see how it interacts with other ingredients in specific products.
Will Coumarin clog my pores? (Comedogenic Rating)
Coumarin has an estimated comedogenic risk of 4/5 based on GlowLens ingredient scoring across 2 product analyses. A higher number signals a stronger pore-clogging tendency for acne-prone skin. This is informational, not medical advice.
Known Side Effects and Allergies: how concerning is Coumarin?
Coumarin currently scores 50/100, which places it in a moderate-concern band overall. The main practical consideration is skin irritation, sensitivity, or breakouts in formulas where it appears alongside other potentially irritating ingredients. This is informational, not medical advice.
Is Coumarin safe for pregnancy?
While our analysis gives Coumarin a safety score of 50/100 with a medium concern level, we recommend consulting your healthcare provider about any cosmetic ingredients during pregnancy or nursing. GlowLens provides general safety assessments - pregnancy-specific advice should come from your doctor or midwife.
Final Verdict: who should be most cautious with Coumarin?
Acne-prone, oily, and reactive skin types may want to be more cautious with Coumarin, since it carries a stronger pore-clogging signal. Other skin types generally have less to weigh. This is informational, not medical advice.