Thanks for the comments.
I tried them both. And I don’t see any difference in term of softness effect, they both give “soft” effect at 1%.
I used Stepan for GCC and PO65 for GO. Since I don’t want to add another glucoside in my hairwash, I just add single Glyceryl Oleate at 0.5% (I had already Lauryl Glucoside at 6%), the formula works fine so far. But is it okay to use just single Glyceryl Oleate (not PO65)?
But I heard the Glyceryl Oleate can cause irritation/alergies reaction, while GCC is more nonirritant. Is my understanding correct?
Thanks,
M