What Is Dimethicone Propylethylenediamine Behenate?
Dimethicone Propylethylenediamine Behenate is a specialty silicone created by joining three key building blocks: dimethicone, a propyl ethylenediamine linker and behenic acid (a long chain fatty acid often sourced from rapeseed or peanut oil). The result is a silky fluid that marries the slip of traditional silicones with the conditioning touch of fatty acids.
Synthetic silicones first entered beauty labs in the 1950s for their smooth feel and water-resistant nature. Over the years chemists started tweaking them to target specific needs. By grafting an amino-rich linker and a fatty acid onto dimethicone they produced Dimethicone Propylethylenediamine Behenate, a molecule that clings better to hair and skin and offers extra softness.
Manufacturing begins with standard dimethicone made from silica. The polymer is reacted with a propyl ethylenediamine compound to add gentle positive charges, then esterified with behenic acid. Careful purification removes unreacted materials, leaving a clear low-odor fluid ready for cosmetic use.
You will spot this ingredient in rinse-out and leave-in conditioners, anti-frizz serums, heat-protect styling creams, facial moisturizers, primers, body lotions and even long-wear foundations where a smooth feel and light film are welcome.
Dimethicone Propylethylenediamine Behenate’s Cosmetic Benefits/Uses
This multitasking silicone brings several perks to modern formulas
- Antistatic – the slight positive charge in the molecule neutralizes stray negative charges on hair fibers so flyaways calm down, hair looks sleeker and combing gets easier
- Skin Conditioning – forms a breathable layer that locks in moisture, leaves skin feeling soft and supple and gives products a cushiony glide during application
- Emollient – fills tiny gaps on the skin surface to create a smooth touch, improves spreadability and helps the final product feel richer without heaviness
Who Can Use Dimethicone Propylethylenediamine Behenate
Its lightweight silky feel means most skin types can use this ingredient comfortably. Dry and normal complexions tend to appreciate the extra emollience while oily and combination skin usually tolerate it because the molecule does not feel greasy or heavy. Those with very acne-prone or congestion-prone skin who prefer to avoid any film-forming ingredients may wish to monitor how their skin responds though the comedogenic risk is generally low.
Dimethicone Propylethylenediamine Behenate is produced from silica and plant-derived behenic acid so it is suitable for vegans and vegetarians. Formulators sometimes source behenic acid from peanut oil so individuals with severe peanut allergies should check with the brand about raw material origin.
The ingredient is considered safe for use during pregnancy or breastfeeding based on current cosmetic safety assessments. This is not medical advice and anyone who is pregnant or nursing should show the full ingredient list of any product to their healthcare provider to be sure it aligns with personal medical needs.
Dimethicone Propylethylenediamine Behenate does not make skin more sensitive to sunlight and has no known impact on sun protection products. It is also fragrance free and nonvolatile which makes it a gentle option for people who react to strong scents or alcohols.
Potential Side Effects/Adverse Reactions
Side effects and reactions to the topical application of Dimethicone Propylethylenediamine Behenate can vary from person to person. The points below show potential issues but they are not expected to be common when the ingredient is formulated and used correctly.
- Skin redness or itching: rare sensitivity to the amino portion of the molecule can trigger mild irritation
- Contact dermatitis: very uncommon allergic reaction that may present as rash or burning
- Breakouts or clogged pores: possible in individuals who are highly susceptible to comedogenic buildup
- Hair limpness or product buildup: continuous use in leave-in hair products without proper cleansing can weigh strands down
- Interaction with strong actives: the silicone film may slightly slow penetration of highly acidic or exfoliating ingredients applied afterward
If any unwanted reaction occurs discontinue use and seek advice from a qualified health professional.
Comedogenic Rating
Rating: 1 / 5
Dimethicone Propylethylenediamine Behenate sits at the low end of the scale because dimethicone segments are non occlusive and tend to glide over the skin without sinking into pores. The attached behenic acid tail is a larger fatty chain that could contribute some richness, nudging the score above zero, but the overall molecule is still too bulky and structurally smooth to pack tightly inside follicles. Most users, including those who break out easily, tolerate it well in leave-on or rinse-off products.
Formulation style matters: very heavy creams loaded with waxes or additional oils may raise the clogging potential even if this silicone itself is mild.
Summary
Dimethicone Propylethylenediamine Behenate delivers three main perks: antistatic control for hair, skin conditioning and a silky emollient finish. The silicone backbone forms a light breathable film, the amino linker carries a gentle positive charge that neutralizes static and the behenic acid arm smooths rough spots so products glide and feel plush.
It is a specialty ingredient rather than a household name, so you will mostly find it in higher end conditioners, primers and long-wear makeup where its film-forming talent shines.
Current safety assessments rate it as non irritating, non sensitizing and suitable for daily use. As with any new cosmetic, patch testing a small area first is a smart way to make sure your skin agrees with the formula.