Dull blotchy spots after applying top coat usually occurs when too much activator is applied or not enough time is allowed before applying the top coat.
It looks like the top coat or the color discolor because of UV light from the sun. I have had this happen once or twice. Changing brand of topcoat fixed the issue.
The little bumps that can pop up when painting your nails are essentially air that got trapped between the layers of polish during the polishing process.
Paint defects - A dry and Bumpy base coat is a paint defect caused by dry overspray landing on the paint surface. Dry spray is the opposite of runs. This is caused by being too far away, too much air pressure, or the wrong reducer. This will give it a rough or bumpy look.
Patchy paint can result if paint has been applied unevenly. Patchy paint can be down to a variation in surface absorption. Walls might appear patchy if they have variation in texture. Using paint that is not fully mixed can cause a patchy appearance.
Dull blotchy spots after applying top coat usually occurs when too much activator is applied or not enough time is allowed before applying the top coat.
Determining if a top coat is dry involves a few simple checks. First, look at the surface of your nails. A fully dry top coat will have a smooth, glossy finish. Lightly touch the edge of one nail with a fingertip; if it feels dry and firm, it's likely set.
Reapply Your Top Coat Every 2-3 Days
Contrary to popular belief, top coat is not a set-it-and-forget-it type of application.
One of the main reasons for bubbling is applying a top coat in a thick layer. This takes longer to dry, trapping air underneath. These bubbles then rise to the surface, creating an imperfect finish. To prevent this issue, apply thin, even layers and allow each coat to dry thoroughly before adding another.
The easiest way to fix it is to allow it to dry all the way, and then use a file and gently fill the spot where it smudged until it's even. Wipe all the dust with alcohol, then reapply the polish. Allow it to fully dry before touching it again,” says Nguyen.
Initially, tiny white patches appear on the surface of the nail-plate. As the fungus spreads, the nails may dry out and the surface of the nails flake and crumble. The fungus feeds on the nail protein, keratin, to obtain its nutrients, which further weakens the nail-plate, and makes it distorted.
Why Does Nail Polish Chipping Happen? So many factors can contribute to nail polish chipping, from air bubbles caused by an on-the-fly application to skipping the protective sealing of a good top coat. Smooth nail beds make for smooth polish adhesion, so forgetting to file and buff can end in chips sooner than later.
Low-quality or old nail polish tends to get thick and gloopy, making it tough to paint on evenly. Applying too much polish at once or using uneven strokes can also lead to streaking.
Use fine automotive Scotch-Brite to rub the most damaged areas first. Use light to medium pressure and try to knock off all the peeling flakes. If the color coat is exposed, use very light pressure and focus on the borders. You can also use fine sandpaper.
Look for a coat that is a touch snug with a heavyweight suit under it. The shoulders should be gently hugging the body, with no hang-time over the line of the arm. This way, if you throw your overcoat over just a thin layer, it won't look boxy or ill-fit.
Finishing Tips | Sanding Between Coats. When applying several coats of finish to a project it becomes necessary to sand between coats to not only remove any trash that has settled into the finish but also to promote good adhesion between the layers of finish.
Nail polish can streak for a variety of reasons - ranging from ridges in the nail, to uneven distribution of pigment at the time of application to not having enough polish on the brush to provide even coverage to each coat as it dries.
In regards to smoothness, I find a thicker coat works best. Spray it while you have light reflecting off the piece/you can see a shine and keep spraying in passes until it looks glossy and smooth. Once it dries, it should be smooth and matte. Be careful though - too much and it could run or go cloudy.
Over-curing can cause the colour to adhere directly to the nail plate, making removal difficult. Avoid this issue by ensuring adequate curing without overcooking the gel polish. Gel Polish Top-Coat: Cure the top coat for a maximum of 90 seconds, even if you feel that 60 seconds may be insufficient.
Clear coat needs to "flow", which requires a full wet coat, which is applied with 50% overlapping strokes, with a little closer application of the nozzle, and sometimes with slower speed than you spray the paint. The trick is not to over coat it and get runs or sags.
Smudging, blotchiness, or streaks, or even patches of dark and light on the surface is actually a sign of excess trace residues still on the surface. Usually wiping the paint with a spray detailer and a soft microfiber polishing towel will remove the smudging or streaks. A normal car wash will also fix the problem.