u/Easy_Net_857

I just bought Manchineel Tree and as much as I love the alien green, I'm having trouble seeing a color change. I did 3 coats (one of them being too thick admittedly) + Sally Hansen Top Coat (the shiny chrome bottle one). I can only really get the full color shift after I stick it in a UV lamp, after which it quickly reverts. In natural sun, I haven't been able to get more than the pictured color even after about 5 minutes in direct sun (no glass or window in the way).

Is it the top coat? Or maybe a dud bottle? Anyone able to get a stronger shift in natural sun than me?

Picture order: indoor light, UV light, Outside light.