Using Standard Salicylic Acid Powder for Acne Spot Treatment
Question
I have the standard Salicylic Acid (BHA) powder. The staff mentioned that this type is difficult to dissolve in water and can become unstable or solidify at low temperatures, recommending Salicylic Acid EZ™ (ชนิดละลายน้ำ) instead for water-based formulas like toners.
How can I effectively use the standard Salicylic Acid powder I already have? What solvents can I use to dissolve it, and what is the recommended usage percentage for skin application, such as for acne spot treatment?
Answer
Using Salicylic Acid (BHA) Powder for Acne Spot Treatment
You have the standard Salicylic Acid (BHA) powder, which, as the staff mentioned, is not easily soluble in water and is difficult to use in a water-based toner formula.
However, you can still use this type of Salicylic Acid for targeted acne treatment by dissolving it in a suitable solvent. The product description indicates that this type of Salicylic Acid powder can be dissolved in:
- Propylene Glycol
- Butylene Glycol
- Alcohol
- Isopentyldiol (recommended for best solubility, up to approximately 25%)
To use your Salicylic Acid powder for spot treatment, you can create a simple solution using one of these solvents. For skin application, the recommended usage rate is typically between 0.1% and 2.0% (according to FDA regulations for leave-on products).
For example, you could dissolve the Salicylic Acid powder in a small amount of Propylene Glycol or alcohol at a concentration suitable for spot treatment (e.g., 1-2%). This solution can then be applied directly to individual acne spots.
Remember that Salicylic Acid can cause dryness or irritation, especially at higher concentrations. Start with a lower concentration and test on a small area first.
While this allows you to use the powder you have, the water-soluble versions like ActiveRelease™ Salicylic Acid are generally easier to incorporate into various formulations, including toners, and may offer better stability and gentler release on the skin.
