It is common to experience itching under the armpits, as this area is sensitive and prone to irritation. To help with this, it is recommended to use a fragrance-free moisturizing cream or lotion, such as Aveeno, Glaxal Base, Cutibase, or Cerave. Apply the moisturizer as often as needed throughout the day and avoid using scented soaps or hot water during showers. After showering, gently pat the area dry with a towel and apply the moisturizer within 5 minutes. Give this routine a try for 1 to 2 weeks. If the itching persists or worsens, it is advisable to seek medical advice as a precaution.