Retinaldehyde 0.1%
UltraSolve 3%
ActiveProtec UV 1%
Followed as admin suggested, but it didn't dissolve, so it reduced to 0.03%, still not dissolved. So the heat is melted, which really do not know if it should be heated or not. If given, it must not be more than a few degrees (but it doesn't really melt)
Adenosine 0.5% is soluble in water, it cannot be dissolved. So I heated it, put Propylene Glycol , Ethoxydiglycol , --> completely dissolved until clear --> put a liquid bottle into water --> later it was precipitated.
So I did it again, but this time --> when it's done, use Sponge Gel . After refrigerating it, it settles in the bottle a lot.
Clover Flower Extract (Biochanin A 98%) 0.5% --> soluble in isopentydiol 5% is insoluble. But when heated, it melts. But I really don't know if it can get hot or not.
In conclusion
1. Retinaldehyde Can't get heated? But it doesn't melt. What should I do?
2. Adenosine will be made into a slap water. Do I need to find a way to prevent it from settling down? / Even if it's made into a gel, it still precipitates. But in my heart, I want it to be more of a slap.
3. Clover is another one that is very difficult to melt. I really don't know if it can get hot or not.