This Halacha is an excerpt from our Sefer
For pleasure: It is forbidden to anoint for pleasure purposes. [Thus, one may not apply to one’s body oil, cosmetics, or perfume.]
Medical purposes: It is permitted to anoint for medical purposes.
On Tisha B’av, one may not use the following items unless it is for medical purposes:
May one use deodorant during Tisha B’av?
May one place a medical cream on his skin on Tisha B’av?
May one apply chap stick/lip balm to dried lips?
 Michaber 554:15; See also Michaber Y.D. 381:2 regarding Shiva
 See Piskeiy Teshuvos 554:14
 Michaber ibid; Admur 614:1
 Gra 554:15; Admur 614:1
 Biur Halacha 554 “Sicha”; Piskeiy Teshuvos 554:14; Michaber 381 regarding Aveilus
Ruling regarding Yom Kippur: It is forbidden to apply deodorant to one’s skin on Tisha B’av even in order to prevent a bad odor of sweat. [Admur 614:1]
Other Opinions: Some Poskim rule it is forbidden to apply deodorant on Tisha B’av just like Yom Kippur. [Mateh Yehuda brought in Biur Halacha ibid]
 The reason: As the laws of Sicha on Tisha B’av are more lenient than the laws of Yom Kippur.
 As it is done for medicinal purposes, which the Sages permitted to be done on Tisha B’av.