Which kinds of rings are best?
When installing nano ring extensions, there are two types of rings that can be used: nano rings with or without silicone. (Micro rings are only intended for wefts, not for nano ring extensions.) Which variant is best depends partly on the hair type. If your client's natural hair is a little more sensitive, the rings with silicone are better than those without, as the silicone layer minimises the pressure on the hair.
Nano rings with silicone are only half a millimeter larger than standard nano rings. This means that you also get unobtrusive and comfortable hair extensions with this attachment method.