Skin Brightening Lotion and Face Cream Formulation

Regarding your questions about formulating skin brightening body lotion and face cream with SPF PA+++ 30, and adding ingredients to a ready-made cream:

It is crucial to obtain the specific usage instructions, recommended concentration, solubility, and stability information directly from the supplier for each extract you purchased from eBay (Mulberry leaf, Goji berry, Pineapple, Papaya, Pomegranate peel, Soybean, Emblica, Licorice root). Different extraction methods and standardization result in products with varying properties and usage guidelines. Without this specific information, providing precise formulation advice or recommended percentages for your extracts is not possible.

I have searched for the extracts you listed, but I could not find information on the exact versions with the specifications you mentioned (e.g., 10:1, 50%, 90% Ellagic acid, 80% SBOS, 20% Glycyrrhizic acid) in our database. Therefore, I cannot provide specific guidance on how to incorporate your particular extracts into a formulation.

However, here is some general information:

Skin Brightening Body Lotion

Formulating a lotion requires basic components such as a Water Phase, Oil/Emollient Phase, Emulsifier to combine water and oil, Thickener, Preservative, and Active Ingredients for skin brightening.

Several of the extracts you have may possess skin brightening properties, such as Pomegranate peel extract (Ellagic acid), Soybean extract, Emblica extract, and Licorice root extract. However, to properly use these extracts in a formula, you need information from the supplier, including solubility (water, oil, or alcohol soluble), optimal pH range, stability to heat or light, and recommended usage percentage.

Other ingredients commonly used for skin brightening in lotions include Niacinamide (Vitamin B3), Alpha Arbutin, and various forms of Vitamin C (e.g., Ascorbyl Glucoside, Sodium Ascorbyl Phosphate).

Face Cream with SPF PA+++ 30

Formulating a sunscreen to achieve a specific SPF and PA rating (e.g., SPF 30 PA+++) is a very complex process. It cannot be done simply by adding sunscreen agents to a basic cream base.

It requires using appropriate amounts of UV Filters, including Physical Filters (such as Zinc Oxide, Titanium Dioxide) and Chemical Filters.

Sunscreen formulas must undergo efficacy testing (In-vivo testing) in specialized laboratories to confirm the stated SPF and PA values.

Therefore, formulating a sunscreen with a definite SPF/PA value yourself is difficult and not recommended without proper expertise and testing equipment.

Adding Vitamin B3 and Preservative to Ready-Made Baby Mild Cream

As mentioned earlier in the thread, ready-made products sold commercially (like Baby Mild cream) already contain preservatives in sufficient amounts to protect against microbial growth throughout the product's shelf life.

If you wish to add Niacinamide (Vitamin B3), which is generally water-soluble, to the Baby Mild cream, you can do so without needing to add extra preservative, as the original cream's preservative system will still be active.

However, adding any substance to a finished product can potentially affect the cream's stability. It is advisable to test with a small amount first.

Using Litmus Paper

Litmus paper is used to measure the pH (acidity or alkalinity) of a solution.

What are you trying to measure the pH of, and what value are you aiming for? Generally, skincare products have a pH suitable for the skin (around pH 4.5-5.5). pH adjustment may be necessary when using certain active ingredients.

Further Recommendation:

To use your extracts correctly and safely, it is highly recommended to contact the supplier you purchased them from directly to request product documentation (Certificate of Analysis - CoA or Technical Data Sheet - TDS). These documents will provide essential details such as active compound specifications, recommended usage percentage, solubility, precautions, and stability information.

If you wish to make your own lotion or cream, consider starting with a ready-made cream base designed for adding extracts or learning how to create basic cream bases using various emulsifiers and thickeners available for cosmetic formulation.

I have searched for products related to the ingredients you mentioned and common skin brightening and sunscreen ingredients in our database for your reference. Please note that this information may not directly match the specifications of the extracts you purchased.

• Licorice Extract (Glabridin 4.5%, Water-Soluble) (ID 7798)
• Pure-Glabridin™ Licorice Extract (Glabridin 90%) (ID 1502)
• Hi-Glabridin™ Licorice Extract (Glabridin 40%) (ID 1503)
• Licorice Extract (Licochalcone A 20%) (ID 1504)
• Licorice Extract (Licochalcone A 1%, Water-Soluble) (ID 69)
• Pomegranate Sterols (ID 6974)
• Papaya Enzyme (Papain) (ID 1036)
• Pineapple Enzyme (Bromelain) (ID 1077)
• Tryptic-Soy™ (ID 125264)

As I cannot provide specific formulas for the extracts you currently have, this answer focuses on general information and recommendations for finding further details.