Recommended Percentages for Your Formulation

Based on the product information and considering your skin concerns (sensitive, clogged pores, inflamed acne, dehydration), here are the recommended usage percentages for each ingredient:

• Allantoin: Recommended usage is 0.5%. It helps reduce irritation and supports skin repair, which is beneficial for sensitive and acne-prone skin.
• Vitamin B3 (Niacinamide): The recommended usage range is 1-10%. For addressing acne, oiliness, and strengthening the skin barrier, a concentration of 5% is often recommended. High-purity types like Safe-B3™ or Extreme-B3™ can be used up to 10% and are less likely to cause flushing, even on sensitive skin. You could start with 5% and adjust based on your skin's response.
• Vitamin B5 (Panthenol): The recommended usage range for skin is 1-10%, with 1-3% being generally recommended. It's excellent for hydration, reducing inflammation, and supporting wound healing, which helps with dehydration and acne. Using above 5% might make the product sticky. A concentration of 1-3% would be suitable.
• Green Tea Extract: The recommended usage range varies by type. For Hi-EGCG™ (liquid), it's 1-5%. For Pure-EGCG™ (powder), it's 0.1-2%, with 1-2% recommended for oily skin. Green Tea Extract helps reduce oiliness and inflammation, beneficial for acne. You could consider 1-2% of Hi-EGCG™ or 0.5-1% of Pure-EGCG™ for your formulation.

As the staff mentioned, it's crucial to perform a patch test before applying the full formulation to your face, especially with sensitive skin. Start with lower concentrations within the recommended ranges if you are concerned about sensitivity.