Transderm Gel Formulation: Texture, Storage, and Ingredient Addition
Question
I have successfully made the Transderm gel formulation. I was able to dissolve all ingredients and achieved a thick, sticky gel texture resembling condensed milk, with no separation. Is this result correct? How should I store this gel? Should it be kept in an opaque bottle, and can it be exposed to light? I have tried using it, and while it is indeed sticky, my skin feels very soft in the morning after washing. I also tried applying it as the first step before Vitamin C and a moisturizer with DMAE, and the Transderm gel absorbed faster. I previously asked about adding Centella extract and DMAE into this formula; is this possible, and how would it affect the formula's stickiness and stability?
Answer
Based on your description and the replies in the thread, your mixing process seems correct, and it's great that you were able to successfully dissolve the ingredients and achieve a stable, thick gel!
Regarding adding Centella extract and DMAE, as mentioned in the replies, it is technically possible. However, adding more ingredients, especially actives, will likely increase the stickiness of the formulation, which you've already noted is present in the base mix. Adding too much could also potentially affect the stability of the gel over time, leading to separation. It's generally recommended to try the base formula first and see if you are happy with the results and texture. If you wish to add more, do so cautiously in small amounts, checking for both stickiness and stability.
For storage, it is best to store your finished formulation in a cool, dark place, away from direct sunlight and heat. Using an opaque container can also help protect the active ingredients from light exposure, which can help maintain their stability and the overall quality of the product over time.