Yes a receding hairline for both men and woman is very normal by the time the person reaches age 30 and above.
You can help regrow the hair and prevent the receding hairline from occurring by massaging your hair and scalp with some castor oil and also massage your scalp with lavender essential oil three times per week.
Also avoiding stress and eating a healthy diet of foods can also help with a receding hairline and keep your hair from falling out.
Avoid stress and use Aloe Vera with Oil and Coconut milk to wash your hair and massage it into your hair as well.