Sos Spot Roll-On Blemish Treatment

Yon-ka

Sos Spot Roll-On Blemish Treatment

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About this product

The Yon-ka Sos Spot Roll-On Blemish Treatment is a treatment. Our analysis of its 20 ingredients (6 low-risk) rates it Great (74/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Treatments
Ingredients
20
Low-risk
6
Fragrance
Fragrance-free
Origin
France

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 2/1
Good for dry skin
Sodium Lactate Lactic Acid
Caution for dry skin
PEG-35 Castor Oil
Oily/Acne-Prone Skin No data
Sensitive Skin 0/10
Caution for sensitive skin
Borneol Calendula Officinalis Flower Extract Cupressus Sempervirens Oil Lactic Acid Linalool Citronellol Limonene Citral Geraniol Coumarin

Ingredients list

20 total
Lower hazard (1) Higher hazard (7)
All20 Fragrance12 Masking8 Skin Conditioning7 Perfuming4 Tonic4 Solvent2 Deodorant2 Buffering Agent2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
5
PEG-35 Castor Oil
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
Borneol
(Fragrance, Masking, Perfuming)
Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient)
lavandula angustifolia oil
(Fragrance, Tonic)
Citrus Aurantifolia Oil
(Cleansing, Fragrance, Hair Conditioning, Perfuming, Skin Conditioning, Tonic)
Pelargonium Graveolens Leaf Oil
(Not Reported)
1
Ichthammol
(Cosmetic Biocide, Antimicrobial)
Rosmarinus Officinalis Leaf Oil
(Fragrance, Skin Conditioning)
2
Cupressus Sempervirens Oil
(Masking)
Thymus Vulgaris Flower/Leaf Oil
(Fragrance, Skin Conditioning, Tonic)
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
1
A
Calendula Officinalis Flower Extract
(Masking, Perfuming, Skin Conditioning)
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens
5
Citronellol
(Fragrance, Masking)
Allergens
Allergens
7
Geraniol
(Fragrance, Masking, Tonic)
Allergens
Allergens
7
Citral
(Flavoring Agent, Fragrance, Masking)
Allergens
Allergens
7
Coumarin
(Fragrance, Masking)
Allergens
Allergens

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Helianthus Annuus Seed Oil
Skin Conditioning
Citrus Aurantifolia Oil
Skin Conditioning
Rosmarinus Officinalis Leaf Oil
Skin Conditioning
Thymus Vulgaris Flower/Leaf Oil
Skin Conditioning
Lactic Acid
Exfoliant, Humectant
Sodium Lactate
Exfoliant, Humectant

Benefits

Good for dry skin

Concerns

Contains eu allergen
Not fungal acne (malassezia) safe
Geraniol — higher EWG
Citral — higher EWG
Coumarin — higher EWG
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Borneol
Fragrance, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceMaskingPerfuming
Helianthus Annuus Seed Oil
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningSkin conditioning emollient
lavandula angustifolia oil
Fragrance, Tonic
Limited public safety data.Read moreShow less
EWG N/A FragranceTonic
Citrus Aurantifolia Oil
Cleansing, Fragrance
Limited public safety data.Read moreShow less
EWG N/A CleansingFragranceHair conditioningPerfumingSkin conditioningTonic
Pelargonium Graveolens Leaf Oil
Not reported
Limited public safety data.Read moreShow less
EWG N/A Not reported
Ichthammol
Cosmetic biocide, Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 1 Cosmetic biocideAntimicrobial
Rosmarinus Officinalis Leaf Oil
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioning
Cupressus Sempervirens Oil
Masking
Low-hazard ingredient.Read moreShow less
EWG 2 Masking
Thymus Vulgaris Flower/Leaf Oil
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningTonic
Sodium Lactate
Buffering agent, Exfoliant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Buffering agentExfoliantHumectantKeratolytic
Calendula Officinalis Flower Extract
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A MaskingPerfumingSkin conditioning
PEG-35 Castor Oil
Emulsifying, Surfactant
Moderate-hazard ingredient.Read moreShow less
EWG 5 EmulsifyingSurfactant Fungal-acne trigger
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Linalool
Fragrance, Deodorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceDeodorantMasking Allergens
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens
Citronellol
Fragrance, Masking
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceMasking Allergens
Geraniol
Fragrance, Masking
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceMaskingTonic Allergens
Citral
Flavoring agent, Fragrance
Higher-hazard ingredient.Read moreShow less
EWG 7 Flavoring agentFragranceMasking Allergens
Coumarin
Fragrance, Masking
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceMasking Allergens

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening, start slow: Best in the PM a few times a week to begin with; avoid layering with other strong actives the same night.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Lactic Acid

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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