1. Sephora Drying Drops, speed-dry oil (£13.45)
I've never been a huge fan of speed-dry top coats or the 'wonder formulas' that seem to be endorsed so frequently, but an impulse purchase in a Parisian branch of Sephora brought me this wonderous bottle of drying oil. After applying nail varnish, drip a single drop onto each nail and polish will be touch dry in a matter of seconds. This really helps to set polish if you're in a rush, especially if you're applying before bed and want to avoid that creased look you often get from bed sheets. A bottle lasts an age too, so it's basically an investment.
2. Dr Lewinn's Renunail, nail strengthener (£17.85)
If you suffer from weak, split or broken nails then this is an absolute life-saving product. Applied as a base coat to nails over the period of a few weeks, it really helps them to grow and look much healthier. I use this frequently and my nails hardly ever split or chip, which is a far cry from the brittle mess they used to be. Although it seems like an expense, the bottle is twice the size of a normal nail polish to allow you to use it every day. Now I would never be without a bottle of this.
3. OPI Start to Finish, base and top coat (£13.95)
The perfect lazy girl's product, this dual-purpose base and top coat helps polish to apply well and stay put. It features a thicker brush for quick application, as well as a thin enough formula to enable you to build up polish over a number of coats. I hate having to take a whole nail varnish collection away with me, so this also provides the perfect solution for travelling. Its glossy finish also helps polish to remain chip-free for an extra day or so, reducing the need for a polish change.
What are your nail must-haves?