Mixing Cosmetic Ingredients for Personal Use

Hello! I understand you're asking if you can use custom-mixed creams and ingredients for personal use without selling them, and I see that another member (jaojang) has shared their experience.

Mixing various ingredients for personal use is possible, but there are several important precautions to ensure safety and effectiveness:

• Knowledge of Ingredients: You should have knowledge and understanding of each ingredient you plan to use, such as its properties, safe usage concentration, limitations when mixing with other ingredients, and precautions for use.
• Appropriate Concentration: Some ingredients have maximum safe concentration limits for skin application. Using concentrations that are too high can cause irritation, allergic reactions, or be harmful.
• Ingredient Compatibility: Some ingredients may react with each other, making the product unstable, degrading quickly, or producing undesirable substances.
• Cleanliness and Hygiene: The mixing process must be clean and sterile to prevent contamination in the product, which can spoil the product or cause infection when used.
• Storage: Self-mixed products may not contain appropriate amounts of preservatives, leading to a short shelf life and increased risk of microbial growth. They should be stored in suitable containers and under correct environmental conditions.

Even for personal use, safety should be the primary concern. If you lack knowledge or experience in cosmetic mixing, it is recommended to study information thoroughly, consult experts, or start with simple, less complex basic ingredients.