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Methylparaben

Methylparaben
Also known as: Methyl 4-Hydroxybenzoate · E218
Preservative

The most-studied cosmetic preservative — safe at approved concentrations.

Skin types
All types
Pore-clogging
Non-comedogenic
Use when
AM & PM
Concentration
≤0.4%
What it does

Methylparaben is the most widely used and studied paraben preservative in cosmetics. Concerns about oestrogen-mimicking activity were raised in the early 2000s, but regulatory bodies (EU, FDA, WHO) have repeatedly reviewed the evidence and confirmed safety at approved cosmetic concentrations (≤0.4%). It is highly effective against bacteria and fungi.

Benefits
  • Highly effective broad-spectrum preservative
  • Extensively studied safety profile
  • Stable across a wide pH range
How to layer
☀️ Morning routine
Cleanser
Toner
Serum
Moisturiser
SPF
🌙 Evening routine
Cleanser
Toner
Serum
Moisturiser
Face Oil
After cleansing, before moisturiser
Good for
All skin
Heads up
  • Weak oestrogenic activity at very high concentrations — not relevant at cosmetic use levels
  • May cause contact dermatitis in paraben-sensitive individuals
  • Consumer perception is negative despite safety data
How to use

A background preservative ingredient. No special application needed.

Typical concentration: ≤0.4% for individual parabens (EU limit)