Practical Tips for DIY Cosmetic Formulation: Heating, Mixing, and Distilled Water
Asked by: zron_zron
On: February 16, 2013
Product Type:
Cosmetics
Question
I have some questions regarding the equipment and process for making cosmetics at home:
- When heating certain substances, is it okay to heat them directly on a gas stove, or should a different method be used? What type of container is suitable for heating?
- If the temperature needs to reach 70 degrees, can a thermometer be used to measure it directly?
- What kind of container is best for mixing creams? Can a regular bowl be used, or is something else recommended?
- Where can distilled water be purchased? I was told at the Government Pharmaceutical Organization that I could fill my own bottle, but they said it's used for cleaning machinery. Is this type of distilled water suitable for cosmetic use?
Answer
Here are the answers to your questions about equipment and heating:
- Heating Substances: Directly heating substances on a gas stove is generally not recommended because it can cause uneven heating and potentially burn or degrade your ingredients. It's best to use a water bath (double boiler). Place your container with the substance inside a larger pot filled with water, and heat the water. This provides gentle and even heating. For containers, use heat-resistant glass beakers or stainless steel containers. Avoid plastic unless specifically designed for heating.
- Measuring Temperature: Yes, you can and should use a thermometer to accurately measure the temperature, including reaching 70°C. Ensure the thermometer is suitable for the temperature range you need.
- Mixing Containers: For mixing creams, glass or stainless steel bowls/beakers are highly recommended. They are non-reactive, easy to clean and sanitize, and durable. While some regular bowls might work depending on the material (e.g., ceramic), glass or stainless steel is generally preferred for stability and hygiene, especially if heating is involved.
- Distilled Water: Distilled water can typically be purchased at pharmacies, some supermarkets, or stores selling car supplies (often sold for car batteries). Regarding the water from the Government Pharmaceutical Organization used for cleaning machinery, it might not be pure enough for cosmetic use. Water for cosmetic or laboratory use needs to be free from impurities that could affect your formulation or skin. It's safer to buy distilled water specifically labeled for laboratory, medical, or cosmetic purposes.