





Pentylene Glycol
Sold by weight (g or Kg) for formulation accuracy.Reference only: 250 g ≈ 257 mL (at 20°C).

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Quick specs
Humectant
Elegant skin feel
Preservative booster
INGREDIENT OVERVIEW
Pentylene Glycol
Pentylene Glycol is a multifunctional ingredient used in cosmetic formulations as a humectant, solvent, and formulation support component.
It helps improve moisture retention within the formulation while enhancing the performance and delivery of other ingredients. In water-based systems, it contributes to a smoother, more balanced skin feel compared to traditional humectants alone.
Pentylene Glycol is also valued for its ability to support preservative systems, making it a practical addition in formulations where stability and overall system performance are important.
It is widely used across serums, lotions, gels, and cleansing products as part of well-balanced, high-performing formulations.
QUALITY & SOURCING
- ≥99.8% purity (batch verified)
- Fermentation-derived for consistent quality
- Low odour and clear appearance suitable for refined formulations
- Stable pH profile (5% solution ~6.2)
- Batch consistency supported by COA and routine testing
KEY SPECIFICATIONS
- Ingredient: Pentylene Glycol (USP)
- INCI: Pentylene Glycol
- CAS: 5343-92-0
- Solubility: Water soluble
- Typical use level:
- Leave-on: 1–5%
- Rinse-off: 1–3%
- Commonly used alongside glycerin to reduce tack and improve sensory balance
- Starter: 2–3% for most cosmetic formulations
FORMULATION NOTES
Processing notes
Add to the water phase with mixing until fully uniform. Suitable for cold-process and heated systems.
Pentylene glycol integrates easily into most formulations and does not require pre-dissolving.
Compatibility notes
- Compatible with most cosmetic ingredients and preservative systems
- Often paired with glycerin, propanediol, or sodium PCA in humectant systemsS
- Supports preservative efficacy in many formulations
pH notes
Stable across typical cosmetic pH ranges (approx. 4–8).
Formulation examples
- Hydrating toner (2–4%)
- Barrier-support serum (2–5%)
- Lightweight lotion (1–3%)
- Preservative-support system (2–4%)
Troubleshooting
Too sticky (rare) → reduce overall humectant load or rebalance with lighter humectants
Preservative not performing → increase pentylene glycol within range or review system
Thin formula → adjust thickener; pentylene glycol can slightly reduce viscosity
COMPARISON & ALTERNATIVES
- Lower tack humectant vs glycerin
- Similar function: propanediol
- Higher hydration feel: glycerin
- Stronger moisture-binding: sodium PCA
SENSORY PROFILE
Pentylene glycol contributes a lightweight, smooth skin feel with lower perceived tack than glycerine at comparable use levels. It is commonly used to balance humectant systems, improving slip and overall sensory profile in both leave-on and rinse-off formulations. Sensory outcome is formulation-dependent; bench testing is recommended.
STORAGE & HANDLING
- Store in a cool, dry place, protected from heat, moisture, and direct light.
- Keep container tightly sealed when not in use.
- Shelf life: 2 years when properly stored
PRODUCT SAFETY
- Low irritation potential when used within recommended levels.
- Suitable for leave-on and rinse-off systems.
- Keep out of reach of children.
- Avoid inhalation of dust. Use appropriate PPE during handling and formulation.
- Refer to Safety Data Sheet (SDS) contained within documents tab.
DOCUMENTATION
- Cosmetic grade, fermentation-derived pentylene glycol
- Typical purity ≥99.0% (COA-verified; example batch 99.8%)
- Stable density and refractive index supporting formulation consistency
Often paired with this ingredient
Explore a curated edit of key ingredients.
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