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When not to dye your hair

2025-10-28 09:23:34 female

When can't you dye your hair? It’s healthier to avoid these times

Hair dyeing is a way for many people to change their appearance and improve their self-confidence, but not all times are suitable for hair dyeing. If you choose the wrong time, you may cause damage to your hair or body. The following are the hair dyeing taboo times and related data that have been hotly discussed on the Internet in the past 10 days to help you dye your hair scientifically.

1. During the menstrual period

When not to dye your hair

Women’s immunity is low during menstruation, and chemical components in hair dyes may enter the bloodstream through the scalp, increasing the risk of allergies or infections. The following are the statistics of adverse reactions to hair dyeing during menstrual period reported by netizens:

Type of adverse reactionProportion (sample size 1,000 people)
Itchy scalp32%
Hair is noticeably damaged25%
Allergic redness and swelling18%

2. Pregnancy and lactation period

Pregnant women and nursing mothers should avoid hair dyeing. Ammonia, hydrogen peroxide and other ingredients in hair dye may affect fetal development or be passed on through breast milk. A survey on a maternal and infant platform shows:

crowdChoose hair dye ratioThe proportion of uncomfortable symptoms
Early pregnancy (1-3 months)5%41%
Lactation8%29%

3. When the scalp is damaged

If your scalp has wounds, eczema, or severe flaking, hair dyeing can aggravate the irritation. Data from the dermatology department of a certain hospital show that among the cases of scalp problems aggravated by hair dyeing:

Question typeDeterioration ratioExtended recovery period
seborrheic dermatitis67%2-3 weeks
Unhealed trauma89%More than 1 month

4. Postoperative recovery period

If you are weak after surgery, dyeing your hair may cause infection or interfere with the effectiveness of the medicine. Plastic surgeons recommend the following surgeries with caution:

Surgery typeRecommended time to avoid dyeing after surgery
head surgery3 months
heart stent6 months
cancer chemotherapy1 year

5. Under extreme weather conditions

Hair dyeing in hot or cold weather can affect the results and scalp health:

weatherMain risks
Temperature＞35℃Pigment is lost quickly, and scalp sweating causes allergies.
Temperature＜0℃The hair cuticles are difficult to close and the hair is dry

Healthy hair dye tips:

1. Do a skin test 48 hours before dyeing

2. Choose plant-based hair dye or semi-permanent dye

3. The interval between hair dyeing should be at least 3 months.

4. Use color-protecting shampoo after dyeing

By scientifically avoiding these hair dyeing taboo periods, you can not only obtain your ideal hair color, but also protect your hair and body health to the greatest extent. If you are not sure whether your condition is suitable for hair dyeing, it is recommended to consult a professional doctor first.

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