Ingredient Substitution (Phytosphingosine) and Aloe Vera Extract Usage Percentage

Regarding your question about the usage percentage of Aloe Vera Extract:

The information stating a maximum usage of 3% on the product page refers to the recommended concentration of the extract in a formula. However, as explained, the Aloe Vera Extract sold is a 1:10 concentration (meaning 1kg of extract comes from 10kg of fresh aloe). Therefore, using 3% of this extract is equivalent to using 30% fresh aloe, and using 5% extract is equivalent to using 50% fresh aloe.

Generally, using up to 10% of this 1:10 extract concentration in a formula is acceptable, as it is comparable to applying fresh aloe vera gel directly to the skin (unless you have a specific sensitivity to aloe).

However, for your specific formula, it was recommended to use 2-3% of the Aloe Vera Extract. This is not because using more is unsafe, but rather to optimize the formula by allowing space for other beneficial active ingredients that can help address your current skin irritation and combination skin type more effectively. Using a higher percentage of Aloe Vera might limit the inclusion of other ingredients without making the formula too heavy or diluting other actives too much.

In summary, while using more than 3% (up to around 10%) of the Aloe Vera Extract 1:10 is generally possible, sticking to 2-3% in your formula is recommended to create a balanced product suitable for your skin concerns and type, allowing for the inclusion of other complementary ingredients.