Killa

Zitsticka

Where to buy Possibly in stock

About this product

The Zitsticka Killa is a treatment. Our analysis of its 8 ingredients (4 low-risk) rates it Excellent (94/100). Based on its ingredients, it looks well-suited to oily / acne-prone skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Treatments
Ingredients
8
Low-risk
4
Fragrance
Fragrance-free
Origin
United States

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 1/3
Good for dry skin
Hyaluronic Acid
Caution for dry skin
Salicylic Acid Alcohol Sodium Hydroxide
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Salicylic Acid Alcohol
Sensitive Skin 1/2
Good for sensitive skin
Oligopeptide-76
Caution for sensitive skin
Salicylic Acid Alcohol

Ingredients list

8 total
Lower hazard (1) Higher hazard (4)
All8 Skin Conditioning6 Antioxidant2 Masking2 Hair Conditioning2 Fragrance2 Denaturant2 Antimicrobial2 Viscosity Controlling1
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
A
Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising)
Oligopeptide-76
(Antimicrobial, Antiseborrhoeic, Skin Protecting)
4
B
Salicylic Acid
(Antiacne Agent, Antidandruff Agent, Corn/Callus/Wart Remover, Denaturant, Exfoliant, Fragrance, Hair Conditioning, Skin Conditioning, Keratolytic, Masking, Preservative)
Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
Melaleuca Alternifolia Leaf Oil
(Antioxidant, Perfuming)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
2
Alcohol
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling)
Bad for Dry Skin
Bad for Dry Skin
Bad for Sensitive Skin
Bad for Sensitive Skin

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

Hyaluronic Acid
Skin Conditioning, Humectant
Oligopeptide-76
Skin Protecting
Salicylic Acid
Exfoliant, Skin Conditioning
Niacinamide
Skin Conditioning
Melaleuca Alternifolia Leaf Oil
Antioxidant
TOCOPHEROL
Antioxidant, Skin Conditioning

Benefits

Fungal-acne (Malassezia) safe
Good for oily/acne-prone skin

Concerns

May not suit dry skin
May not suit sensitive skin

Ingredients explained

Hyaluronic Acid
Skin conditioning, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningViscosity increasing agentAntistatic agentHumectantMoisturising
Oligopeptide-76
Antimicrobial, Antiseborrhoeic
Limited public safety data.Read moreShow less
EWG N/A AntimicrobialAntiseborrhoeicSkin protecting
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
Melaleuca Alternifolia Leaf Oil
Antioxidant, Perfuming
Limited public safety data.Read moreShow less
EWG N/A AntioxidantPerfuming
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Salicylic Acid
Antiacne agent, Antidandruff agent
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B Antiacne agentAntidandruff agentCorn/callus/wart removerDenaturantExfoliantFragranceHair conditioningSkin conditioningKeratolyticMaskingPreservative Good for Oily SkinBad for Sensitive Skin
Alcohol
Antifoaming agent, Antimicrobial
Causes moisture evaporation - prone to dry out skinRead moreShow less
EWG 2 Antifoaming agentAntimicrobialAstringentMaskingSolventViscosity controlling Bad for Dry SkinBad for Sensitive Skin

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

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Use with caution
BHA (salicylic) (Salicylic Acid)

Low-strength topical salicylic acid (BHA) is generally considered fine. Caution is usually reserved for high-strength leave-on products and salicylic peels.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

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

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

BHA (salicylic) 0.5–2%

Salicylic acid is OTC-capped at 2%; 0.5–2% is the usual leave-on range. Much below that it acts more as a soothing agent than an exfoliant.

Salicylic 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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