I use Bondi Sands and have for 2 years. I use the same technique, with a mitt and the regular foam for light/medium skin.
I don't over use or over layer, and I use on clean, smooth skin like I always did.
But for a while now it seems to pool and patch, into speckles and in some areas it literally acts as if none has been applied. I am very even and apply in natural light.
This never used to happen, and nothing I do has altered. I have no skin issues, my life and health and pores are the same, and I use same products. I have troubleshot it over and again online with no answer.
Previously the tan was smooth, no patches or pooling, and lasted ages. Now it lasts a much shorter time and even a tiny drop of water brings it off. However, if I try to scrub off in the bath, it's a nightmare lol.
It just fees like a waste of money at this point.