Switched from one Selsun to another and this happened!

Backstory: used the orange coloured selsun for years now and it’s been the only thing that has completed gotten rid of the white flakes. Decided to switch to the citrus scented one and then this happened!!

Used the remaining bit of my orange coloured selsun and my scalp hasn’t gotten back to normal since :((( feeling really defeated. Any advice? Is this simply just dry scalp??

I keep tapping my head and flooshing my hair around and it keeps coming out like this 😭 any reccomendations please 🥺