I am always on the lookout for cheap beauty tips. A tip was to buy cheap nail polish and cover it with a nice expensive top coat to make it look and last like an expensive nail polish. This sent me on the lookout for a top coat. I found the Sally Hanson top coat.
Here are two photos taken on the same day after 3 days of wearing a cheap R10 nail polish. The one hand had top coat, the other had nothing. The nails both chipped and looked bad, but the chips were in different places. With the top coat, the nail polish seemed to peel off from the sides and without the top coat the nail polish chipped from the front of the nail.
The Sally Hanson Top Coat made the polish look more professional and finished, but did not help it last any longer. However, it had these weird cracks which you can see on the first photo. All in all I am not very much impressed. I did like other Sally Hansen nail products very much, just not this specific top coat.