The use of track lighting in your bathroom would be totally suitable to you. You can use glass covered bulbs to ensure that moisture does not enter the bulb or socket of your track head/pendants. However, if a glass lens is given with the track heads, you should avoid using glass wrapped bulbs.
Basically, if you want to install lights in a bathroom that are classified as ‘zones,’ the fixtures must have an IP rating. However, outside of specified zones, any standard lighting can be used without issue.
Zone 2
A region extending to 0.6 metres beyond the bath and over the shower or bath if the bath or shower is more than 2.25 m in height. It is necessary to use a light fitting with an IPx4 rating at the very least. No longer does this region have a special IP number, and any lights fitting could be used except it is clearly designated as just not for use in bathrooms, in which case it should be avoided.
For the bathroom, the most energy-efficient light bulb is one that produces cool light and illuminates the entire spectrum of light colours. Compact fluorescent lamps (CFLs) and light-emitting diodes (LEDs): When compared to an incandescent light bulb, compact fluorescent lights (CFLs) consume around 75% less energy while lasting approximately 8-15 times longer.
The use of LED bulbs for bathroom illumination has become a viable choice in previous years. Color temperatures ranging from 2700K to 3000K and a CRI of 90 or higher are preferred, as is the case with the others. The brightness of LEDs, which is measured in lumens, should be closely scrutinized.