I have used Effetre 258 Tongue Pink in the past, and never been able to get any strike out of it at all.
The story goes, and this may be completely wrong - but what I heard was that Tongue Pink started as a contaminated batch of white, that some people liked, and so it was re-branded. Is it true? I don't know for sure.
Anyway - it finally occurred to me that it might do interesting things when worked in a dragon - due to the lengthy working time and repeated heatings and coolings. And worst case scenario - I had a white dragon.
And, in fact - it did strike - it came out quite nice.
For comparison, here is the Powder Pink dragon (on the right) with the Tongue Pink dragon (on the left). Really - you can't call either of them pink - the Tongue pink is a shaded vanilla and salmon, and the Powder Pink is a milk chocolate with cream - but if you ignore the disappointment at neither of them being actual pink - the colours are quite nice and useful in an earthtone palette.