What Is Dipotassium Capryloyl Glutamate?
Dipotassium Capryloyl Glutamate is the dipotassium salt of N-octanoyl glutamic acid, an amino acid–based compound created by linking naturally occurring glutamic acid with caprylic acid, a medium-chain fatty acid found in coconut and palm oils. The finished ingredient is an ultra-mild, water-soluble surfactant that carries a light negative charge, helping it attract and lift away dirt and oil without stripping skin or hair. Amino acid surfactants first gained traction in Japan in the late 1980s as formulators searched for gentler alternatives to traditional sulfates; since then this particular glutamate has become a staple in modern cleansing systems. Production starts with the acylation of plant-derived glutamic acid using caprylic acid to form capryloyl glutamic acid, followed by neutralization with potassium hydroxide to obtain the dipotassium salt. Thanks to its mildness and good foam profile it shows up in facial cleansers, shower gels, shampoos, micellar waters, baby washes, deodorant sprays, cleansing wipes and even sulfate-free toothpaste.
Dipotassium Capryloyl Glutamate’s Cosmetic Benefits/Uses
This versatile ingredient improves both the performance and sensory feel of many rinse-off and leave-on formulas
- Cleansing: Acts as a mild surfactant that binds to oil and impurities so they can be rinsed away, producing a soft creamy lather that leaves skin or hair feeling clean yet comfortable
- Deodorant: Helps reduce body odor by removing odor-causing bacteria and residues while also lowering the surface pH slightly, creating a less hospitable environment for microbial growth
Who Can Use Dipotassium Capryloyl Glutamate
Dipotassium Capryloyl Glutamate’s ultra-mild nature makes it suitable for nearly all skin types including sensitive, oily, dry and combination. Because it cleanses without stripping the skin’s natural barrier it is often preferred by people prone to redness or tightness after washing. Those with very dry or eczema-prone skin may still need to follow with a moisturizer since any surfactant has the potential to remove some surface lipids.
The ingredient is made by combining plant-derived glutamic acid and caprylic acid then neutralizing the mixture with mineral potassium, so it is free of animal by-products and considered appropriate for vegans and vegetarians.
No data points to specific risks for pregnant or breastfeeding women when the ingredient is used as directed in rinse-off or leave-on formulas. This is not medical advice and anyone who is pregnant or nursing should review any skincare product with a qualified healthcare provider to be safe.
Dipotassium Capryloyl Glutamate does not increase photosensitivity and can be used morning or night without extra sun precautions beyond the usual daily SPF recommendation.
Potential Side Effects/Adverse Reactions
Individual responses to topical Dipotassium Capryloyl Glutamate can vary. The points below outline potential side effects that are considered uncommon provided the product has been formulated correctly.
- Mild skin irritation such as transient redness or stinging, most often when used at higher concentrations
- Dry or tight feeling if the formula lacks additional emollients and is used too frequently
- Eye irritation if the cleanser accidentally gets into the eyes
- Allergic contact dermatitis in rare cases for people sensitive to glutamates or other formula components
If any discomfort, persistent redness or swelling occurs stop using the product and seek advice from a dermatologist or medical professional.
Comedogenic Rating
Rating: 0–1 out of 5
Dipotassium Capryloyl Glutamate is highly water-soluble and lacks the heavy oily residues that usually block pores. After rinsing it detaches from the skin along with dirt and sebum, so it has virtually no chance to sit inside follicles and form comedones. Formulas that use it often rely on lightweight water bases rather than rich butters or waxes, further lowering clogging potential.
Given this profile it is considered suitable for people who are prone to acne or breakouts.
The only scenario where pore clogging could rise is in a leave-on product combined with heavier occlusive ingredients, in which case the overall formula, not the glutamate itself, would be the concern.
Summary
Dipotassium Capryloyl Glutamate is a plant-derived amino acid surfactant that doubles as a gentle cleanser and mild deodorizing agent. Its glutamic acid head attracts water while the caprylic tail lifts oils, allowing it to whisk away grime without stripping skin or hair. The slight pH decrease it produces also discourages odor-causing bacteria.
Although not as headline-grabbing as hyaluronic acid or niacinamide, this ingredient has quietly become a favorite in sulfate-free face washes, baby shampoos and sensitive skin formulas thanks to its softness and easy-to-formulate nature.
Overall safety data are strong, showing a low risk of irritation or sensitization when used as directed. As with any new product it is smart to run a quick patch test to confirm personal compatibility before full-face or full-body use.