Adding Whitening Ingredients to Lotion with Vitamin B3

Yes, you can add other whitening ingredients like Alpha Arbutin and Vitamin C (L-ascorbic acid) to a lotion containing Vitamin B3, in addition to Glucosamine (N-acetyl-D). The key is to ensure compatibility with the existing lotion formula and follow the usage guidelines for each ingredient.

Calculating the Amount to Add to 600ml Lotion

To determine the amount of each ingredient to add to 600ml of lotion, you need to consider the recommended usage rate (%) for each ingredient. The calculation is as follows:

Amount (grams) = (Recommended Usage Rate % / 100) * Total Lotion Volume (grams)

Assuming the lotion has a density close to water (1 ml ≈ 1 gram), 600ml is approximately 600 grams.

• GlucoBright™ (Acetyl Glucosamine): The recommended usage rate is 1-8%, with 4% recommended when used with Niacinamide (Vitamin B3). If you aim for 4%:
  Amount = (4 / 100) * 600 grams = 24 grams
• Alpha Arbutin (Switzerland): The recommended usage rate is 0.2-2%, with 2% recommended for skin brightening. If you aim for 2%:
  Amount = (2 / 100) * 600 grams = 12 grams
• Vitamin C (L-ascorbic acid): The recommended usage rate is 3-15%, with 15% for whitening. If you aim for 15%:
  Amount = (15 / 100) * 600 grams = 90 grams

Important Considerations for Vitamin C (L-ascorbic acid):

L-ascorbic acid is highly effective but unstable, especially in water. It should not be mixed directly into water-based formulas as it will degrade. You must check the ingredients of your Vaseline lotion to see if it contains water. If it does, adding L-ascorbic acid directly is not recommended. L-ascorbic acid is best used in anhydrous (water-free) formulas or requires specific formulation techniques to maintain stability. It also requires a low pH (2.0-4.0) to be effective, which might not be compatible with the pH of your existing lotion.

Alpha Arbutin is water-soluble and generally stable in formulas with a pH between 3.5-6.5. GlucoBright™ (Acetyl Glucosamine) is water-soluble and works best in formulas with a pH in the range of 3-7.

Always start with a small test batch to check for compatibility and stability before mixing a large quantity.