Microbiotic Hydrating Blemish Control HA Serum

Dr. Barbara Sturm

Microbiotic Hydrating Blemish Control HA Serum

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About this product

The Dr. Barbara Sturm Microbiotic Hydrating Blemish Control HA Serum is a serums, essence, ampoule. Our analysis of its 27 ingredients (21 low-risk) rates it Excellent (95/100). 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
Serums, Essence, Ampoules
Ingredients
27
Low-risk
21
Fragrance
Fragrance-free
Origin
Germany
Data updated
May 2026

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 5/4
Good for dry skin
Butylene Glycol Sodium Hyaluronate Propylene Glycol Pantolactone Lactic Acid
Caution for dry skin
Dimethylimidazolidinone Rice Starch Alpha-Glucan Oligosaccharide Xanthan Gum Sodium Hydroxide
Oily/Acne-Prone Skin No data
Sensitive Skin 1/10
Good for sensitive skin
Asiaticoside
Caution for sensitive skin
Acetic Acid Asiaticoside Butylene Glycol Propylene Glycol Citric Acid Sodium Benzoate Potassium Sorbate Lactic Acid Phenoxyethanol Benzyl Alcohol

Ingredients list

27 total
Lower hazard (1) Higher hazard (5)
All27 Skin Conditioning22 Fragrance10 Humectant6 Viscosity Controlling6 Solvent5 Masking5 Emulsion Stabilising4 Buffering Agent4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Alpha-Glucan Oligosaccharide
(Cleansing, Skin Conditioning, Smoothing)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
Bifida Ferment Lysate
(Skin Conditioning)
1
Dimethylimidazolidinone Rice Starch
(Absorbent, Viscosity Controlling)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
Buddleja Officinalis Flower Extract
(Uv Filter)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Asiaticoside
(Antioxidant, Skin Conditioning, Perfuming)
1
Asiatic Acid
(Skin Conditioning, Stabilising)
Maclura Cochinchinensis Leaf Prenylflavonoids
(Not Reported)
1
Madecassic Acid
(Skin Conditioning)
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
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
3
A
Potassium Sorbate
(Fragrance, Preservative)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
1
Pantolactone
(Humectant)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
A
Acetic Acid
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
TOCOPHEROL
(Antioxidant, Fragrance, 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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Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin E
Protects skin and soothes irritation.
Hyaluronic Acid
Hydrates by attracting and holding water.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Redness ReducingSoothes visible redness and calms irritation.
Anti-AgingSoftens lines and helps skin look youthful.
Reduces IrritationEases discomfort and supports skin resilience.
Scar HealingImproves the look of marks and scars.
BrighteningRestores radiance to dull, tired skin.
Dark SpotsFades dark spots for even skin tone.

Concerns

Contains paraben
Contains eu allergen
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Alpha-Glucan Oligosaccharide
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CleansingSkin conditioningSmoothing
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Bifida Ferment Lysate
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Dimethylimidazolidinone Rice Starch
Absorbent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 AbsorbentViscosity controlling
Buddleja Officinalis Flower Extract
Uv filter
Limited public safety data.Read moreShow less
EWG N/A Uv filter
Asiaticoside
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioningPerfuming
Asiatic Acid
Skin conditioning, Stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningStabilising
Maclura Cochinchinensis Leaf Prenylflavonoids
Not reported
Limited public safety data.Read moreShow less
EWG N/A Not reported
Madecassic Acid
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
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
Potassium Sorbate
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A FragrancePreservative
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
+ 4 more — see the full ingredients list above
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
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
Propylene Glycol
Fragrance, Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceHumectantSkin-conditioningagent - miscellaneousSolventViscosity decreasing agentSkin conditioningViscosity controlling Good for Dry Skin
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.
  • 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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