There are several techniques you might want to try. First, if it is possible, give your loved one a choice about shower time.
If your loved one is at a stage he or she can not make these kind of choices, make sure that everything is set up for the shower and you can just gently guide this person to the bathroom.
Often times people need simple reminders such as, “go ahead and step into the shower, let’s get the shampoo and put it in your hair, here is the soap.”
People with dementia forget how to do routine activities such as showering so these types of cues can be very helpful.
If your loved one resists showering, it might be best to do something else for a little while until he or she calms down and then try again later. For some people, knowing there is something they enjoy after the shower can be helpful. “After you shower, let’s get a snack.”
Most of all, make sure that you maintain your loved one’s dignity during this process. Think about how you can make sure he or she is comfortable that their privacy is being respected. Some people prefer to have a stranger (such as a home care worker) help with a shower instead of a family member.