does it start with the letter "M"?

Is it lipstick?

Yeah, it also tends to be reddish, which was ruled out earlier too. D'oh.

I withdraw my question, if I may.

However, might most creams not be considered solid-ish at room temperature too? I wonder if 'not a solid' actually means 'obviously fluid' rather than 'spreadable'.

...a liquid cosmetic that is neither mascara nor perfume nor used to cover blemishes. Well...my vast and extensive knowledge of make-up is tapped.

Are we thinking about this the right way - could it be something like shampoo? What does Owen classify as cosmetic? Edit - no range of scents. Are all cosmetics used on the head?

Is it hair gel?

If you want to get really pedantic, it's not hair glue, as the bottle clearly says 'Spiking Glue'. We would have needed 30 questions to get that precision. But it's a subset of hair gel, so Dave should have got it, imho.

Bring it, bitches!