Ingredient review
Bis-Adamantyl PEG-800 Dicarboxamide
INCI: BIS-ADAMANTYL PEG-800 DICARBOXAMIDE
A high-tech synthetic film former that may help lock in moisture, but research is still limited.
In plain English
This ingredient is a large synthetic molecule that spreads over your skin to create a thin, flexible layer. Think of it like a very lightweight, breathable plastic wrap that helps keep water from evaporating. The 'adamantyl' part is a diamond-like structure that may help the molecule stick to skin, while the PEG-800 part is a long chain that holds water. It's used in moisturizers and anti-aging products to give a smooth, hydrated feel without being greasy.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Bis-Adamantyl PEG-800 Dicarboxamide 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-Adamantyl PEG-800 Dicarboxamide.
- 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
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A synthetic polymer made by combining a diamond-like molecule (adamantane) with a long chain of polyethylene glycol (PEG-800) and a dicarboxamide linking group. It is designed to form a film on the skin.
How it works
When applied, the molecule spreads into a thin, flexible film that physically blocks water loss from the skin (reducing transepidermal water loss, or TEWL). The PEG chain also attracts and holds water, adding a humectant effect. The adamantyl group may help the film adhere better to the skin's surface.
Pros
Moisture lock
Forms a breathable film that helps keep water in your skin, reducing dryness and improving hydration over time.
Lightweight feel
Unlike heavy oils or waxes, this polymer creates a smooth, non-sticky finish that works well under makeup or sunscreen.
Cons and cautions
Limited research
There are very few published studies on this specific ingredient, so its long-term benefits and safety are not as well understood as more common moisturizers.
Synthetic origin
It is a lab-created compound, which may be a turn-off for people seeking natural or minimal-ingredient skincare routines.
Best for
- People with dry or dehydrated skin looking for extra moisture retention
- Those who prefer lightweight, non-greasy moisturizers
Use caution if
- Individuals with known sensitivities to PEG compounds (rare)
Usage tips
Safety summary
Based on its chemical structure and similarity to other PEG-based film formers, it is expected to have low irritation and comedogenic potential. However, specific safety data for this exact ingredient is sparse, so caution is warranted for sensitive individuals.
Research notes
Published research on Bis-Adamantyl PEG-800 Dicarboxamide is minimal. Most information comes from patent filings and ingredient supplier data. More independent studies are needed to confirm its efficacy and safety.
Common label clues
- Typical concentration
- 0.1% to 2%
- Regulatory status
- Generally considered safe for use in cosmetics at typical concentrations. Not specifically restricted by major regulators like the FDA or EU CosIng.
- Common uses
- Moisturizers, Anti-aging creams, Serums
- Environmental note
- As a synthetic PEG-based polymer, it may not be readily biodegradable. Environmental impact is not well studied.
Good to know
- The 'adamantyl' part is derived from adamantane, a molecule with a structure similar to diamond.
- PEG-800 indicates the polymer chain length, which affects how water-loving and film-forming the ingredient is.
Common questions
What is Bis-Adamantyl PEG-800 Dicarboxamide in beauty products?
This ingredient is a large synthetic molecule that spreads over your skin to create a thin, flexible layer. Think of it like a very lightweight, breathable plastic wrap that helps keep water from evaporating. The 'adamantyl' part is a diamond-like structure that may help the molecule stick to skin, while the PEG-800 part is a long chain that holds water. It's used in moisturizers and anti-aging products to give a smooth, hydrated feel without being greasy.
What does Bis-Adamantyl PEG-800 Dicarboxamide do in a beauty product?
When applied, the molecule spreads into a thin, flexible film that physically blocks water loss from the skin (reducing transepidermal water loss, or TEWL). The PEG chain also attracts and holds water, adding a humectant effect. The adamantyl group may help the film adhere better to the skin's surface.
Is Bis-Adamantyl PEG-800 Dicarboxamide safe for most people?
Based on its chemical structure and similarity to other PEG-based film formers, it is expected to have low irritation and comedogenic potential. However, specific safety data for this exact ingredient is sparse, so caution is warranted for sensitive individuals.
Who should be careful with Bis-Adamantyl PEG-800 Dicarboxamide?
Individuals with known sensitivities to PEG compounds (rare)
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.