Hello, which one is the best? Each has its own characteristics. Recommend to try to buy a small quantity of all 4 to test in the formula. Can be directly soluble in oil for all 4 types of synthetic (
Lanofree ,
LipidSoft Lanolin ) There will be no problem with rancidity. compared to the natural type (
Lanolin Natural ,
Lanolin Oil ) is likely if stored in hot temperatures. or exposure to sunlight for a long time It can smell rancid.