Revised Liquid Soap Formula for Oily/Combination Skin with Acne and Rashes

Based on your request to modify the liquid soap formula for oily to combination skin prone to acne and rashes, and suitable for skin undergoing exfoliation, here are the recommended changes and additions:

Surfactant System

The original formula uses Sodium Laureth Sulfate, Potassium Laurate, and Sodium Laurate. As suggested by the staff, replacing these with a milder alternative like Sulfate Free Shampoo Base (pH 7, Clear, Foaming) is highly recommended. This base provides good foam while being gentler on the skin, which is crucial for sensitive or exfoliating skin. Use this base at 20-25% in your formula.

Preservative

The original formula uses DMDM Hydantoin. Replacing this with Phenoxyethanol SA (eq. Optiphen Plus) at 1.0% is a good choice. Phenoxyethanol SA is a broad-spectrum preservative that is free from parabens and formaldehyde, making it a safer and less irritating option for the skin.

Beneficial Extracts

The original formula includes Mangosteen Extract, Tamarind Extract, and Turmeric Extract. Turmeric Extract, particularly in the form of WhiteCumin™ 2x or WhiteCumin™, is known for its antioxidant and anti-inflammatory properties, which can be beneficial for acne-prone and irritated skin. You can keep these extracts in your revised formula for their potential skin benefits.

Additional Ingredients for Enhanced Efficacy

To further address oily skin, acne, rashes, and support skin undergoing exfoliation, consider adding the following ingredients:

• Salicylic Acid (BHA): A beta-hydroxy acid that can penetrate pores to help unclog them, reducing acne and blackheads. Include at a suitable concentration for wash-off products (typically up to 2%).
• Niacinamide (Vitamin B3): Helps regulate oil production, minimize the appearance of pores, and strengthen the skin barrier, which is beneficial for oily and acne-prone skin, and can help improve skin tolerance during exfoliation.
• Pure-TECA™ Centella Asiatica Extract (CICA): Known for its strong anti-inflammatory and skin-soothing properties. This is excellent for reducing redness and irritation associated with acne, rashes, and exfoliation.
• Allantoin: A soothing and skin-conditioning agent that helps to calm irritation and promote skin healing.
• Panthenol (Vitamin B5): Acts as a humectant, attracting and retaining moisture, and has soothing and anti-inflammatory properties, supporting the skin barrier.

Colors and Vitamin E

The original formula includes Vitamin E Acetate (Tocopheryl Acetate) and colors (CI 16255, CI 42090). Vitamin E Acetate can be kept for its antioxidant benefits. For the colors, consider using the EasyWash™ versions of Brilliant Blue (CI42090) and Ponceau 4R (CI16255) if available, as they are designed to be easier to wash off and less likely to stain.

Summary of Recommended Changes:

1. Replace Sodium Laureth Sulfate, Potassium Laurate, Sodium Laurate with Sulfate Free Shampoo Base (pH 7, Clear, Foaming) (20-25%).
2. Replace DMDM Hydantoin with Phenoxyethanol SA (eq. Optiphen Plus) (1.0%).
3. Consider adding Salicylic Acid, Niacinamide, Pure-TECA™ Centella Asiatica Extract, Allantoin, and Panthenol for enhanced benefits.
4. Keep Mangosteen, Tamarind, and Turmeric extracts if desired.
5. Keep Vitamin E Acetate.
6. Consider using EasyWash™ colors for CI 16255 and CI 42090.

Always perform stability and challenge testing on your final formula before production.