Ingredient review
Potassium Borageate
INCI: Potassium Borageate
A gentle, plant-derived cleansing agent that helps remove dirt and oil without stripping the skin, making it suitable for sensitive skin.
In plain English
Potassium Borageate is a soap-like ingredient made from borage seed oil. It helps cleansers foam up and lift away dirt and excess oil from your skin. Unlike harsher detergents, it is known for being mild and less likely to dry out your skin, thanks to the nourishing fatty acids from borage oil.
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
- natural
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Potassium Borageate 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 Potassium Borageate.
- 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
Potassium Borageate is a potassium salt formed by reacting borage seed oil with potassium hydroxide. This creates a mild surfactant that can both clean and help mix oil and water in a formula.
How it works
In a cosmetic product, Potassium Borageate works by reducing the surface tension between water and oil, allowing them to mix. This helps lift dirt, sebum, and makeup from the skin so they can be rinsed away. Its mildness comes from the fatty acid profile of borage oil, which includes linoleic acid and gamma-linolenic acid (GLA).
Pros
Very gentle on skin
Potassium Borageate is much milder than traditional soaps or sulfates, making it ideal for daily use on sensitive or dry skin without causing irritation or tightness.
Nourishing fatty acids
Because it's derived from borage oil, it retains beneficial fatty acids like GLA that can help support the skin barrier and reduce moisture loss during cleansing.
Cons and cautions
Lower foam in hard water
Like many soap-based cleansers, Potassium Borageate may produce less lather in hard water, which can affect the sensory experience for some users.
Less common in formulations
It is not as widely used as other mild surfactants, so product options containing it may be limited compared to more mainstream ingredients.
Best for
- People with dry or sensitive skin looking for a mild cleanser
- Those who prefer plant-derived, gentle cleansing ingredients
Use caution if
- Individuals with known allergies to borage or related plants (rare)
Usage tips
Safety summary
Potassium Borageate is considered safe for use in cosmetics at typical concentrations. It is a mild surfactant with low irritation potential, making it suitable for sensitive skin. As with any ingredient, patch testing is recommended for those with known plant allergies.
Research notes
Research on borage oil supports its skin-soothing and barrier-supporting properties due to its GLA content. However, specific studies on Potassium Borageate as a surfactant are limited; its safety profile is inferred from its composition and similarity to other fatty acid salts.
Common label clues
- Typical concentration
- Typically used at 1-10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets as a surfactant and cleansing agent. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Cleansers, Facial washes, Shampoos, Body washes
- Environmental note
- Derived from borage seed oil, a renewable plant source. Biodegradability is expected to be similar to other soap-based surfactants, but specific data is limited.
Good to know
- Borage oil is rich in gamma-linolenic acid (GLA), an omega-6 fatty acid known for its soothing properties.
- Potassium Borageate is often found in 'soap-free' or 'sulfate-free' cleansers.
Common questions
What is Potassium Borageate in beauty products?
Potassium Borageate is a soap-like ingredient made from borage seed oil. It helps cleansers foam up and lift away dirt and excess oil from your skin. Unlike harsher detergents, it is known for being mild and less likely to dry out your skin, thanks to the nourishing fatty acids from borage oil.
What does Potassium Borageate do in a beauty product?
In a cosmetic product, Potassium Borageate works by reducing the surface tension between water and oil, allowing them to mix. This helps lift dirt, sebum, and makeup from the skin so they can be rinsed away. Its mildness comes from the fatty acid profile of borage oil, which includes linoleic acid and gamma-linolenic acid (GLA).
Is Potassium Borageate safe for most people?
Potassium Borageate is considered safe for use in cosmetics at typical concentrations. It is a mild surfactant with low irritation potential, making it suitable for sensitive skin. As with any ingredient, patch testing is recommended for those with known plant allergies.
Who should be careful with Potassium Borageate?
Individuals with known allergies to borage or related plants (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.