Is natural skincare actually gentler? Not necessarily
Not inherently. Some of the most common irritants and sensitisers in cosmetics are botanical — essential oils, citrus extracts and certain plant fragrances among them — while some of the best-tolerated ingredients, such as squalane and dimethicone, are synthetic or synthesised. Tolerance depends on the specific ingredient, not on its origin.
'Natural' has no regulatory meaning
Unlike functional cosmetic, natural has no settled meaning. Korea did define 천연화장품 in the Cosmetics Act and ran a government certification scheme from 2019, but that scheme was abolished in an amendment effective August 2025 and handed to private certifiers. What is left is voluntary — ISO 16128, COSMOS and assorted private marks, each with its own criteria. Unless a product carries one of those marks, natural on the front tells you what a brand wants you to feel, not what is in the bottle.
Botanicals are a leading cause of reactions
Essential oils, plant fragrances and certain extracts are among the most frequently identified contact sensitisers in cosmetics. Tea tree, citrus oils and lavender are genuinely useful and genuinely capable of sensitising reactive skin.
Synthetic does not mean harsh
Squalane derived from sugarcane fermentation is more stable and more consistent than the olive-derived version. Dimethicone is one of the best-tolerated film formers in existence. Neither is less gentle for having been made in a factory.
A better question to ask
Instead of natural or synthetic, ask whether the specific ingredient is well tolerated, whether it does what the product claims, and whether the formula is fragrance-free if your skin reacts. Origin is the least useful of those questions.
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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.