Ingredient review

Beheneth-15

INCI: BEHENETH-15

Beheneth-15 is a gentle synthetic emulsifier that helps oil and water mix in creams and lotions, with a low risk of irritation.

beautyskincareemulsifier

In plain English

Beheneth-15 is a man-made ingredient that helps water and oil blend together smoothly in products like moisturizers and cleansers. It also helps thicken the formula so it feels rich and creamy. Because it's derived from behenyl alcohol (a fatty alcohol from plants), it's considered very mild and unlikely to cause irritation or clog pores.

Quick decision guide

Useful, but context matters

Beheneth-15 is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Beheneth-15.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

Beheneth-15 is a polyethylene glycol (PEG) ether of behenyl alcohol, a fatty alcohol often sourced from rapeseed or other plant oils. It belongs to a family of emulsifiers that reduce surface tension between oil and water, allowing them to mix into a stable cream or lotion.

How it works

In a cosmetic product, Beheneth-15 positions itself at the boundary between oil and water droplets, preventing them from separating. This creates a uniform, stable emulsion that feels smooth on the skin. Its mild surfactant properties also help lightly cleanse without stripping the skin's natural oils.

Pros

Gentle on skin

Beheneth-15 has a very low irritation risk, making it a safe choice for sensitive skin types and daily use.

Improves product texture

It helps create smooth, creamy formulas that feel luxurious and spread easily without greasiness.

Cons and cautions

Synthetic origin

As a PEG compound, it is manufactured through chemical processing, which may not appeal to those seeking natural or minimal-ingredient routines.

Potential palm oil sourcing

Behenyl alcohol can be derived from palm oil, so unless certified sustainable, it may contribute to deforestation concerns.

Best for

  • Anyone looking for a gentle, non-irritating moisturizer or cleanser
  • People with sensitive or reactive skin who tolerate mild synthetic emulsifiers well

Use caution if

  • Those who strictly avoid PEG compounds or synthetic ingredients

Usage tips

Use products containing Beheneth-15 as part of your regular moisturizing routine for a stable, consistent texture.
If you prefer natural emulsifiers, look for alternatives like cetearyl alcohol or glyceryl stearate on the label.

Safety summary

Beheneth-15 is considered safe for cosmetic use with low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin.

Research notes

Studies on PEG ethers like Beheneth-15 indicate they are mild and effective emulsifiers. Regulatory panels (e.g., CIR) have reviewed similar ingredients and found them safe at typical concentrations.

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics in the US, EU, and many other regions. The EU CosIng database lists it as a safe emulsifier at typical usage levels.
Common uses
Moisturizers, Cleansers, Lotions, Hair conditioners
Environmental note
Beheneth-15 is synthetic and may be derived from palm oil. Look for products with sustainably sourced ingredients if environmental impact is a concern.

Good to know

  • Beheneth-15 is often used alongside other emulsifiers to fine-tune the thickness and feel of a product.
  • It is considered safe by major regulatory bodies when used within typical concentrations.

Common questions

What is Beheneth-15 in beauty products?

Beheneth-15 is a man-made ingredient that helps water and oil blend together smoothly in products like moisturizers and cleansers. It also helps thicken the formula so it feels rich and creamy. Because it's derived from behenyl alcohol (a fatty alcohol from plants), it's considered very mild and unlikely to cause irritation or clog pores.

What does Beheneth-15 do in a beauty product?

In a cosmetic product, Beheneth-15 positions itself at the boundary between oil and water droplets, preventing them from separating. This creates a uniform, stable emulsion that feels smooth on the skin. Its mild surfactant properties also help lightly cleanse without stripping the skin's natural oils.

Is Beheneth-15 safe for most people?

Beheneth-15 is considered safe for cosmetic use with low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin.

Who should be careful with Beheneth-15?

Those who strictly avoid PEG compounds or synthetic ingredients

Research sources

CosIng - Beheneth-15OpenCIR Safety Review of PEGsOpenPubMed - Safety of Fatty Alcohol EthoxylatesOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.