Antiageing serum or cream advice
I would like to thank everyone in advance for their help. I am trying to formulate an antiageing cream for my sister who is close to her sixties and has dry skin with pigmentation. I would like to create a serum with hyaluronic acid and vitamin C combined. But I have read that with these products stability is an issue. And also there is a question of the molecular weight with HA. I can get the HA in liquid form but only with 1% active or 100 active powder in both cases very expensive.
My question is if I formulate with these two ingredients how do I make sure it has a good shelf life. Or are there any new raw materials that have better efficacy without the stability issues.
Can I use HA in Haircare products??
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