Mandelic Acid 20% Essence

BiONEO

Where to buy Possibly in stock

About this product

The BiONEO Mandelic Acid 20% Essence is a serums, essence, ampoule. Our analysis of its 13 ingredients (10 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to sensitive skin.

Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
13
Low-risk
10
Fragrance
Fragrance-free
Origin
Taiwan
Data updated
May 2026

The evidence

Quick Product Notes

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

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 2/3
Good for dry skin
Butylene Glycol Glycerin
Caution for dry skin
Beheneth-25 Xanthan Gum Glycerin
Oily/Acne-Prone Skin No data
Sensitive Skin 2/2
Good for sensitive skin
Resveratrol Glycerin
Caution for sensitive skin
Butylene Glycol Glycerin

Ingredients list

13 total
Lower hazard (1) Higher hazard (3)
All13 Skin Conditioning6 Solvent4 Humectant4 Skin Protecting3 Viscosity Controlling3 Emulsion Stabilising2 Antimicrobial2 Viscosity Decreasing Agent2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
2
A
Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative)
1
Water
(Solvent)
1
B
Beheneth-25
(Cleansing, Emulsifying, Surfactant)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
3
A
Glyceryl Polyacrylate
(Film Forming)
1
Resveratrol
(Antioxidant, Skin Protecting)
1
Mandelic Acid
(Antimicrobial)
Hydrolyzed Silk Gland Powder
(Humectant)
Lactobacillus/Eriodictyon Californicum Ferment Filtrate
(Skin Conditioning)
Salix Alba Extract
(Skin Conditioning)

My Ingredient Notes

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

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No close formula match yet — browse other products like this

Key ingredients

AHA
Exfoliates skin for a brighter complexion.
Antioxidants
Shields skin from free radical damage.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Anti-AgingSoftens lines and helps skin look youthful.
BrighteningRestores radiance to dull, tired skin.
Scar HealingImproves the look of marks and scars.
Acne FightingFights acne and helps prevent breakouts.
Reduces IrritationEases discomfort and supports skin resilience.
Good For Oily SkinBalances oil and helps reduce shine.

Concerns

Not fungal acne (malassezia) safe
May not suit dry skin

Ingredients explained

Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Chlorphenesin
Cosmetic biocide, Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Cosmetic biocideAntimicrobialPreservative
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Beheneth-25
Cleansing, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B CleansingEmulsifyingSurfactant
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Glyceryl Polyacrylate
Film forming
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Film forming
Resveratrol
Antioxidant, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin protecting
Mandelic Acid
Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 1 Antimicrobial
Hydrolyzed Silk Gland Powder
Humectant
Limited public safety data.Read moreShow less
EWG N/A Humectant
Lactobacillus/Eriodictyon Californicum Ferment Filtrate
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Salix Alba Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger

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.

Mandelic 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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