Ingredient review

Bis-Aminopropyl Diglycol

INCI: BIS-AMINOPROPYL DIGLYCOL

A gentle synthetic humectant that helps skin retain moisture and improves the texture of skincare formulas.

beautyskincarehumectant

In plain English

Bis-aminopropyl diglycol is a lab-made ingredient that attracts water to the skin, helping it stay hydrated. It also makes products feel smoother and less sticky. Think of it as a helper that keeps moisture in and gives your skincare a nicer texture.

Review score

Safety, usefulness, and evidence

3.8Good
3.8/ 5

Potentially useful with some tradeoffs

The evidence base is useful, but some claims depend heavily on the formula.

Risk flags are low for most users, though the finished product can still irritate.

Source
synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Bis-Aminopropyl Diglycol 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 Bis-Aminopropyl Diglycol.
  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

Bis-aminopropyl diglycol is a synthetic compound derived from glycols and amines. It functions primarily as a humectant, meaning it draws moisture from the environment into the skin, and as a skin conditioning agent, improving the feel and appearance of the skin.

How it works

In a cosmetic product, bis-aminopropyl diglycol works by binding water molecules to the skin's surface, reducing water loss and keeping the skin hydrated. It also has film-forming properties that can make the product feel smoother and less tacky on application.

Pros

Gentle on skin

Has a low irritation risk, making it suitable for sensitive skin types when formulated properly.

Improves product feel

Helps reduce stickiness and gives a smooth, silky texture to creams and serums.

Cons and cautions

Limited hydration depth

As a humectant, it works mainly on the skin's surface and may not provide the deep, lasting hydration of ingredients like hyaluronic acid.

Synthetic origin

It is lab-made, which may not appeal to those seeking natural or organic skincare options.

Best for

  • People with dry or dehydrated skin looking for extra moisture
  • Those who prefer lightweight, non-greasy formulas

Use caution if

  • Individuals with known allergies to synthetic glycols (rare)
  • Those seeking purely natural or plant-based ingredients

Usage tips

Use in moisturizers or serums after cleansing for best hydration results.
Layer with an occlusive ingredient like shea butter or squalane to lock in moisture.

Safety summary

Bis-aminopropyl diglycol is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. However, long-term studies are limited.

Research notes

Research on bis-aminopropyl diglycol is moderate. It is recognized as a safe humectant by cosmetic ingredient review panels, but there are few peer-reviewed studies specifically on its efficacy compared to more common humectants.

Common label clues

Typical concentration
Typically used at 0.5% to 5% in leave-on products
Regulatory status
Approved for use in cosmetics in the US, EU, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
Common uses
Moisturizers, Serums, Hair conditioners
Environmental note
As a synthetic compound, its environmental impact depends on manufacturing and disposal. It is not known to be bioaccumulative.

Good to know

  • Often combined with other humectants like glycerin for enhanced hydration.
  • It is not a common standalone ingredient; you'll usually find it in a blend.

Common questions

What is Bis-Aminopropyl Diglycol in beauty products?

Bis-aminopropyl diglycol is a lab-made ingredient that attracts water to the skin, helping it stay hydrated. It also makes products feel smoother and less sticky. Think of it as a helper that keeps moisture in and gives your skincare a nicer texture.

What does Bis-Aminopropyl Diglycol do in a beauty product?

In a cosmetic product, bis-aminopropyl diglycol works by binding water molecules to the skin's surface, reducing water loss and keeping the skin hydrated. It also has film-forming properties that can make the product feel smoother and less tacky on application.

Is Bis-Aminopropyl Diglycol safe for most people?

Bis-aminopropyl diglycol is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. However, long-term studies are limited.

Who should be careful with Bis-Aminopropyl Diglycol?

Individuals with known allergies to synthetic glycols (rare) Those seeking purely natural or plant-based ingredients

Research sources

Cosmetic Ingredient Review (CIR) Safety AssessmentOpenPubChem - Bis-aminopropyl diglycolOpenEuropean Chemicals Agency (ECHA) InformationOpen

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.