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COSRX · Toners

One Step Original Clear Pad

$22·Leave-on
86
Low concern

Why this score

Concern47 / 55
  • Tea Tree Oil: watch if sensitive

How much genuine, cited concern the ingredients carry, weighted by how much of each is likely present and whether the product stays on or rinses off.

Transparency20 / 20
  • No hidden fragrance blend.

Whether the full ingredient list, and any fragrance, are actually disclosed.

Formulation restraint19 / 25
  • 1 known irritant or fragrance-allergen ingredient: Tea Tree Oil.

Needless irritant or allergen load for the product type. A clean, purposeful formula scores well without any "free-from" theater.

Scored by PlainBody Editorial against the PlainScore method · Label checked July 2026

What’s inside

Butylene GlycolCommonly feared, low concern

A lightweight humectant and solvent similar in role to propylene glycol, used to carry actives and give lotions a lighter feel. CIR has reviewed it and considers it safe as used in cosmetics.

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GlycerinGenerally safe

A humectant that draws water into the skin. One of the best-studied, best-tolerated ingredients in personal care.

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1,2-HexanediolGenerally safe

A glycol used very widely in Korean and Western skincare as a lightweight humectant, solvent, and gentle preservative-booster, often in place of traditional preservatives. It has a low reported irritation rate at use levels and is graded low concern in published assessments.

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PanthenolGenerally safe

A soothing humectant that helps skin and hair look conditioned. Very well tolerated.

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AllantoinGenerally safe

A soothing, skin-conditioning compound (also found in comfrey root) commonly added to calm and hydrate irritated or sensitive skin. It has a long history of safe use with very low irritation potential.

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Tea Tree OilWatch if sensitive

Tea tree oil is used for its antimicrobial reputation in blemish-focused products, but it is a genuine, well-documented contact sensitizer, and its allergy potential rises sharply once the oil has oxidized from air exposure. Fresh, well-preserved, low-concentration formulations are much lower risk than old or improperly stored oil.

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Sodium HydroxideGenerally safe

A strong alkali used in tiny amounts to adjust the pH of cosmetics to safe, skin-friendly levels. At the pH found in finished products, sodium hydroxide is neutralized and well tolerated.

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Hyaluronic AcidGenerally safe

A humectant that holds water at the skin surface for a more hydrated look. No safety concern.

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Lower-concern alternatives

Same category, higher PlainScore.

Cosmetic information for general education, not medical advice. Concern ratings are evidence-graded and cited on each ingredient page. See how we score.