Facial Cleanser Formulation Causing Irritation and Dryness
Question
I used a liquid soap formulation on my face, but it caused a burning sensation and dryness, even after adjusting the pH to 6.5. The formula I used contained:
- Clarify-Wash (Sodium C14-16 Olefin Sulfonate) 10%
- Tea Tree Oil 2%
- Salt 2.5%
- Other cleansing agents
- Guava leaf water
- Herbal water
- Other ingredients
Why did this formula cause irritation and dryness on my face, and what adjustments can be made to make it milder for sensitive facial skin?
Answer
Based on the formula you provided and the analysis, the burning sensation and dryness you experienced when using the liquid soap on your face are likely due to several ingredients that are too harsh for delicate facial skin, even after adjusting the pH.
Specifically:
- Clarify-Wash (Sodium C14-16 Olefin Sulfonate): This is a strong surfactant with high cleaning power. Using it at 10% in combination with other cleansing agents is not considered mild.
- Tea Tree Oil: Using Tea Tree Oil at 2% is a relatively high concentration and can be irritating, especially on facial skin.
- Salt: A high concentration of salt (2.5%) can also cause irritation or a tingling sensation for sensitive skin.
Even though you adjusted the pH to 6.5, which is closer to skin's natural pH, the inherent properties and concentrations of these ingredients make the formula unsuitable for facial cleansing, particularly if your skin is sensitive.
For a milder formulation suitable for sensitive skin, the recommended formula is much simpler:
- Sulfate Free Shampoo Base: 20%
- Thyme Care: 0.8%
- Water: Remaining percentage to reach 100%
This simplified formula uses milder ingredients. It is also recommended to avoid adding fragrance if your skin is sensitive.
Related Products Mentioned
Tea Tree Oil (Extra Grade)
