Saturday Times 25a 912

[fairsailor]

I expect that the usual contributors will know the answer - please, help me.]
25a Synthetic red dye. Truly stumped and thanks in advance.

[Lie-in King]

Do you mean 18a in the Jumbo 922?

Rhodamine

It's always nice to include the number of letters & any you've placed, so that people without the puzzle can more readily help you :-)

[Anngel]

Number of letters would be a real help please?

[Anngel]

Lie in...do you ever get fed up with repeating yourself?? LOL

[Lie-in King]

Lol - not if it sticks occasionally :-)