INCI Medical Safety Check

Is Kosas Truth Serum Vitamin C Vol. 11 Fungal Acne (Malassezia) Safe?

Comprehensive ingredient safety verdict & trigger breakdown across 12 INCI components.

VERDICT: NOT SAFE Face Mask

Contains 2 Flagged Trigger(s) for Fungal Acne (Malassezia)

Screens for lipids, fatty acids, polysorbates, and esters that feed Malassezia yeast and trigger fungal acne / pityrosporum folliculitis.

Cosmetiqly Safety Score

50 %

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Clinical Breakdown & Synthesized Verdict

Analysis indicates that Kosas Truth Serum Vitamin C Vol. 11 does not meet strict Fungal Acne (Malassezia) safety criteria. This formulation contains 2 blacklisted component(s) known to exacerbate fungal acne (malassezia): isopropyl myristate, lauric acid.

With a calculated Cosmetiqly Safety Score of 50%, individuals requiring strict fungal acne (malassezia) avoidance should evaluate alternative products or patch test with caution.

Flagged Trigger Ingredients (2)

⚠️ isopropyl myristate ⚠️ lauric acid

Full INCI Ingredient List (12 Ingredients)

Parsed from official formula disclosure

#	INCI Ingredient Name	Fungal Acne (Malassezia) Status
1	limonene	✓ CLEAN / SAFE
2	geraniol	✓ CLEAN / SAFE
3	titanium dioxide	✓ CLEAN / SAFE
4	methylparaben	✓ CLEAN / SAFE
5	sodium laureth sulfate (sles)	✓ CLEAN / SAFE
6	isopropyl myristate	⚠️ FLAGGED TRIGGER
7	lauric acid	⚠️ FLAGGED TRIGGER
8	tocopheryl acetate	✓ CLEAN / SAFE
9	propanediol	✓ CLEAN / SAFE
10	phenoxyethanol	✓ CLEAN / SAFE
11	carbomer	✓ CLEAN / SAFE
12	squalane	✓ CLEAN / SAFE