What Is Ppg-5 C9-15 Pareth-6?
Ppg-5 C9-15 Pareth-6 is a nonionic surfactant created by reacting medium chain fatty alcohols (carbon length 9 to 15) with an average of five units of propylene oxide followed by six units of ethylene oxide. The fatty alcohol backbone usually comes from coconut or other plant oils, though it can also be synthesized from petrochemical feedstocks. By adding both propylene oxide and ethylene oxide the molecule gains a balanced mix of oil loving and water loving portions, which makes it an efficient helper for blending and washing.
Nonionic surfactants like this started appearing in cosmetics in the 1950s as gentler alternatives to traditional soaps. Over time chemists fine tuned the number of EO and PO units to hit the sweet spot between cleansing power and skin friendliness, giving rise to modern versions such as Ppg-5 C9-15 Pareth-6.
The manufacturing process begins with the chosen C9-15 fatty alcohol. It is first reacted with propylene oxide under controlled temperature and pressure, then ethylene oxide is added in a second step. After purification the finished ingredient is a clear to slightly hazy liquid that dissolves easily in water and many oils, making it versatile for formulators.
You will often find Ppg-5 C9-15 Pareth-6 in facial cleansers, body washes, shampoos, micellar waters, makeup removers, lotions, creams, masks and lightweight serums where a mild yet effective surfactant or emulsifier is needed.
Ppg-5 C9-15 Pareth-6’s Cosmetic Benefits/Uses
In skincare and haircare products Ppg-5 C9-15 Pareth-6 pulls double duty in the following ways:
- Cleansing: Its balanced structure lifts dirt, oil and makeup from the skin or hair then helps them rinse away with water, supporting a fresh clean feel without excessive stripping
- Emulsifying: It keeps water based and oil based ingredients evenly blended so creams stay smooth, washes stay clear and active ingredients remain evenly distributed from the first pump to the last
This surfactant is generally well tolerated by all skin types including dry, oily, combination and normal. Its mild nature means even sensitive skin users often do fine, though formulas with very high levels could feel a bit drying on already compromised skin.
Ppg-5 C9-15 Pareth-6 is usually made from plant oils or synthesized without any animal input so it is suitable for vegans and vegetarians. If animal testing policies matter to you be sure to check the finished brand’s stance.
No studies link this ingredient to problems in pregnancy or while breastfeeding. Because every situation is unique pregnant or nursing women should still run any skincare routine past a healthcare professional for peace of mind. This is not medical advice.
The ingredient does not increase photosensitivity and can be used alongside daytime products without extra sun precautions beyond a regular sunscreen.
It mixes smoothly with common actives like niacinamide, hyaluronic acid and gentle exfoliating acids so there are no special layering rules to worry about.
Potential Side Effects/Adverse Reactions
Side effects can differ from person to person. The points below list potential reactions yet most users will not experience them when the product is formulated and used as intended.
- Redness or stinging on very sensitive skin
- Temporary dryness or tightness after rinsing
- Mild eye irritation if cleanser gets into eyes
- Rare allergic contact dermatitis
If you notice any of these issues stop using the product and consult a medical professional for guidance.
Comedogenic Rating
Rating: 1/5
Ppg-5 C9-15 Pareth-6 is a water soluble nonionic surfactant that rinses clean without leaving an oily film, so it has little chance of blocking pores. The slight score of 1 reflects that in very concentrated leave-on formulas any surfactant can disturb the skin barrier a bit, which might indirectly trigger spots for the most reactive users.
Overall it is considered suitable for people who are prone to acne or breakouts.
Keep in mind that a product’s full recipe and how often you use it matter more than a single ingredient when pore clogging is a concern.
Summary
Ppg-5 C9-15 Pareth-6 serves as both a cleanser and an emulsifier. Its mix of propylene oxide and ethylene oxide segments grabs onto oil and water at the same time so it can lift dirt from skin then wash away clean or hold oil droplets suspended in creams and gels.
While it is not a buzzworthy ingredient, formulators reach for it often because it is reliable, mild and compatible with many actives.
Studies and decades of use point to a strong safety profile with low irritation risk. Still, patch testing any new product that contains it is a smart habit to make sure your skin stays happy.