Two general thoughts, since you have a fairly clear answer that suggests four hours without massage to the area.
One, light treatment to the skin surface should be fine. Skin care, moisturizing, and make up are all supported in my practice right away. Logically I just can't see how a gentle surface treatment would disrupt botox behavior properly placed in the muscular layer below.
Two, the four hours is also a completely random, unstudied duration. It began because the maker of Botox, Allergan, initially made that suggestion. So even though most docs will quote that four hour window for aggressive massage or significant physical exertion, they are really towing the Allergan company line. Again, no data.
I have found that very active patients, ie those that work out 4 or more times a week, as well as those high energy type A patients, all seem to break down botox faster. So my observation is that it is either the amount of exercise or the general speed that you live your life that influences duration more than what you do the first four hours post injection.