I have just been using nail polish for a few months after bad biab removal left my nails in a shocking state.
I already had some Revlon products, so I was just using these. And I've added in some Sally Hansen and Essie now, but I think it's more about the prep and how you apply that makes more of a difference.
This is what I do and I have changed them weekly, but some of the times I change them every 2nd week. I haven't had any chipping so far.
The trick is to not rush it. You have to allow time for each layer to dry.
Before anything push back cuticles otherwise you might get that line if you get polish on them. If you do, it will actually wash off after a day or so.
First I use BioSculpture keratin drops as my nails are still in rehab. (I might just carry on using it anyway as it seems this bottle will last forever)
Base coat I use Sally Hansen Miracle Repair. Sometimes I just have this on. It's clear but with a pinkish tint.
One coat of colour, wipe the one side of the brush on the bottle, and swipe over nail in strokes with the other side. 3 should be plenty depending on the brush. Middle, side, side.
Let it dry.
If you need to, do another coat. Same process but cap the edges. Let it dry.
Top coat. Cap the edges again.
Around Christmas time now, I have left off the 2nd colour coat and used a fine glitter polish layer and then a top coat. I might just keep doing this as this layer does seem to make them so much longer lasting. I have taken some off after two weeks just to change them up, not because they were chipped. I could have left them on another week I am sure.
I had been going to a salon for years, but I am just going to continue doing my own. You do get better with practice, so the more you do it, the better the results. And now I am able to monitor the state of my nails, where before I had a quick look after the removal, for them to just be covered up again for another month.