There are several different types of hand showers available for your home. Which type will work best for you will depend on many factors. One of the most important things to consider is how large your bathroom shower area is. You'll want to make sure your hand shower
features a long enough hose to reach all areas of your bathroom, including the corners where you may not want to sit and relax. In addition to that, you'll also want to look at the additional features on hand showers to determine whether or not they would benefit you.
Of these two, of course it's usually much easier to install a hand shower in your bathtub rather than the other way around. The traditional stationary hand shower can often be easily unscrewed from its mounting bracket, and the hand shower is simply slipped over in place of it when installed. The advantage of this is that there is typically a long hose that extends from shower head to shower tub, and often there is also a convenient sitting area to put on top of the tub to relax.
Another option when installing a hand shower in your bathroom is to replace your existing shower faucets with a hand sprayer. These sprays can be installed on almost any hand valve, including valves made for gravity circulation showers. Some even feature the ability to control the spray amount from a remote control, making them convenient. Of course if you're going to replace your shower faucets, installing one of these panels should be able to give you the functionality you require.
One thing that may come up when installing a new shower head is whether to go with a rain shower arm, a hand shower arm, or both. Rain shower arms are useful for the fact that they prevent water from spraying into your legs when you walk in the bathroom. If you have a taller person who is going to use the bathroom, they can also prevent water from spraying into their legs by putting their arm over their head. While it can't completely stop water splashing from happening, an arm over the head can prevent it from happening at all.
Hand showers are similar to rain shower heads in that they often feature a flange on the bottom of the enclosure. The flange will help keep water from splashing into the floor as it happens. However, if you don't have a flange, or if your bathroom doesn't have one, then there are several options. You could install a separate waterproof board for the bottom of the enclosure, which would be secured with silicone. You could also make use of a "diaper hose" or a shower curtain to serve the same purpose, but the disadvantage of these two options is that you may need to replace the flange at some point.