Hey!
Am a soaper from Sri Lanka.
our climate is very tropical and hot and it gets super humid on rainy days and it’s hard to hard to cure soaps coz i basically live in a humid jungle type of place.
So on sunny days, i cure my soaps in the sun. It gets up to 3-35° On a very hot day and my soaps turn out great!
I keep them out for a few hours and get very hard and the fragrance’s doesn’t fade or the soap colours so far. The soap dont melt or turn bad.. they actually get really hard and lighter.. i guess they loose their water weight pretty soon.
but even so, i do this only for the first few days, then i keep them in for the rest of the 4 weeks.
my soaps used to sweat so much that they get yucky to touch and ruin the packaging at times.. but now they are so beautiful hard and perfect!
hope this helps!
P.s.
my oils include olive oil, coconut oil, sunflower oil