There is nothing wrong with putting oil on the hair during the day in Ramadan and that does not affect the fast.

It is permissible to shower while fasting and that does not affect the fast.

Applying kohl and cream while fasting does not break the fast. It is better not to use kohl during the day when fasting.

It is permissible to treat your toothache and apply paste and the like to the gums whilst fasting, but that is subject to the condition that you do not swallow it.

Wearing perfume does not break your fast, but it is not permissible to inhale incense because incense contains particles which, if inhaled, may reach the stomach through the nose.

There is nothing wrong with a man playing with his wife, or a wife with her husband, by saying words while fasting, on the condition that there is no danger of either of them climaxing. It is permissible to kiss and play with one’s wife, if one is sure that there is no risk of reaching climax.