Ingredient review
Bis(C13-15 Alkoxy) Hydroxybutamidoamodimethicone
INCI: BIS(C13-15 ALKOXY) HYDROXYBUTAMIDOAMODIMETHICONE
A gentle silicone derivative that smooths hair and skin without heavy buildup, but may not suit those avoiding silicones.
In plain English
This is a type of silicone that has been modified to be more water-friendly and less likely to build up on hair or skin. It forms a thin, flexible film that helps lock in moisture and makes hair feel silky and skin feel smooth. Unlike some older silicones, it's designed to rinse out more easily and not cause that heavy, greasy feeling.
Review score
Safety, usefulness, and evidence
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
Quick decision guide
Useful, but context matters
Bis(C13-15 Alkoxy) Hydroxybutamidoamodimethicone 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Bis(C13-15 Alkoxy) Hydroxybutamidoamodimethicone.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic silicone polymer with alkoxy (ether) and amidoamine groups, making it more water-dispersible and less occlusive than traditional dimethicone.
How it works
It deposits a very thin, breathable film on the surface of hair or skin. This film reduces friction (making hair easier to comb and skin feel softer) and helps seal in moisture without completely blocking the skin's natural functions.
Pros
Lightweight conditioning
Unlike heavy dimethicone, this modified silicone is more water-dispersible, so it conditions without leaving a greasy or heavy layer on hair or skin.
Reduces frizz effectively
By smoothing the hair cuticle, it helps control frizz and flyaways, making hair look shinier and feel softer to the touch.
Cons and cautions
Synthetic origin
As a man-made silicone, it does not biodegrade quickly and may be a concern for those seeking fully natural or eco-friendly formulations.
Not for silicone-free routines
If you follow a 'no silicones' hair or skincare regimen, this ingredient would not fit your preferences, even though it is milder than some alternatives.
Best for
- People with dry or frizzy hair looking for smoothness
- Those who want a lightweight silicone that rinses out easily
Use caution if
- Anyone strictly avoiding all synthetic silicones for environmental or personal reasons
Usage tips
Safety summary
Considered safe for use in cosmetics at typical concentrations. Low irritation and comedogenic risk. No significant safety concerns reported in cosmetic use.
Research notes
Limited peer-reviewed studies specific to this exact ingredient, but it is a derivative of amodimethicone, which has a long history of safe use in hair care. The modification improves water dispersibility and reduces buildup.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. No specific restrictions beyond general cosmetic safety regulations.
- Common uses
- Conditioners, Hair masks, Leave-in treatments, Serums, Moisturizers
- Environmental note
- Silicones in general are not readily biodegradable. However, this modified version may have slightly lower environmental persistence than some older silicones, but it is still synthetic.
Good to know
- This ingredient is often found in 'smoothing' or 'anti-frizz' hair products.
- It is considered a 'next-generation' silicone designed to be more rinseable than older types.
Common questions
What is Bis(C13-15 Alkoxy) Hydroxybutamidoamodimethicone in beauty products?
This is a type of silicone that has been modified to be more water-friendly and less likely to build up on hair or skin. It forms a thin, flexible film that helps lock in moisture and makes hair feel silky and skin feel smooth. Unlike some older silicones, it's designed to rinse out more easily and not cause that heavy, greasy feeling.
What does Bis(C13-15 Alkoxy) Hydroxybutamidoamodimethicone do in a beauty product?
It deposits a very thin, breathable film on the surface of hair or skin. This film reduces friction (making hair easier to comb and skin feel softer) and helps seal in moisture without completely blocking the skin's natural functions.
Is Bis(C13-15 Alkoxy) Hydroxybutamidoamodimethicone safe for most people?
Considered safe for use in cosmetics at typical concentrations. Low irritation and comedogenic risk. No significant safety concerns reported in cosmetic use.
Who should be careful with Bis(C13-15 Alkoxy) Hydroxybutamidoamodimethicone?
Anyone strictly avoiding all synthetic silicones for environmental or personal reasons
Research sources
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.