Usage Percentage for Brightening & Anti-Acne Cream Ingredients

Regarding your question about the percentage of each ingredient for a brightening and anti-acne face cream:

Based on the information provided:

• Nano White: The recommended usage rate is 2-5%. For optimal whitening results, 5% is suggested. Remember to add it in the final step when the temperature is below 40°C and the pH is between 4-7.
• Allantoin: Its properties (soothing, moisturizing, mild exfoliation) are mentioned, but the provided text does not specify an optimal usage percentage.
• Vitamin B5: Its benefit in reducing oil production and helping with acne is noted. An example formula provided in the conversation used 5% Vitamin B5. This could be a potential starting point for your cream.
• Witch Hazel Extract: This ingredient has a wide recommended usage range of 10-100%. The text explains that higher percentages (like the 93% used in an example toner/base formula) are effective for pore tightening and can be used as a base, replacing water in a formula. The percentage you use in your cream will depend on whether it's a primary ingredient for pore/oil control or a supporting one.

Summary for a Cream:
To create a cream targeting brightening and anti-acne, you could consider incorporating:

• Nano White at 5% for brightening.
• Vitamin B5 at around 5% for oil control/acne support.
• Witch Hazel Extract at a percentage suitable for your cream base, potentially using it as a significant part of the water phase if strong pore tightening is desired (referencing the 10-100% range and the example of 93% as a base).
• Allantoin at an appropriate percentage (you would need to consult other sources or typical usage rates as it's not specified here) for soothing benefits.

Keep in mind that formulating a stable and effective cream requires balancing all ingredients, considering the cream base, and ensuring compatibility. The percentages above are based on the information you provided and general guidelines, not a complete, tested formula.