This particular colour came in the Max Factor Beauty Box which you got when you spent more than £15 (definitely worth it in my opinion as you get a lipgloss, nail polish and mascara.!.) All of which I will talk about eventually.
This retails for £5.99 (which for 11ml is alright considering it's payoff). You only need two coats for full coverage and full colour pay-off. It also dries quickly so great for me who always ends up doing my nails on public transport (sorry.!.!.)
Its name Glossfinity does it justice as it really does shine (when dry of course) and it really does last a long time. Not sure about 7 days as my bad nail habits are coming back but it definitely lasts more than 4 days.!.!.!.
I would absolutely recommend this to you and I plan on getting more.!.