Hair Washing Frequency: Considerations and Advice
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As we age, our scalp produces less oil, meaning we may not need to wash our hair as frequently [1]. However, the frequency of washing hair depends on various factors, such as oil production, hair texture, and hair care needs. Here's a breakdown of the recommended washing frequency for different hair types.
Straight or Fine Hair
Straight or fine hair tends to get oily quickly, so it's recommended to wash it every 2–3 days. To prevent greasiness, use lightweight shampoo and avoid heavy conditioners near the scalp [1].
Wavy or Curly Hair
Wavy or curly hair is naturally drier, so it benefits from less frequent washing. Aim to wash it once or twice a week. Use moisturizing sulfate-free shampoos, and consider co-washing (washing with conditioner only) midweek to maintain moisture [1].
Coily or Kinky Hair (Type 4)
Coily or kinky hair is the driest and most fragile hair type. It's best to wash it every 1–2 weeks. Gentle shampoos, deep conditioning, scalp massages, and oil treatments help preserve moisture and scalp health [1].
Oily Scalp
For those with an oily scalp, wash daily or every other day with clarifying or lightweight shampoos to manage excess sebum and avoid buildup [1][3].
Dry or Damaged Hair
To prevent stripping natural oils, wash dry or damaged hair every 4–7 days. Use moisturizing shampoos and conditioners, and avoid hot water [1].
Color-Treated Hair
Wash color-treated hair 1–2 times per week to maintain color integrity and avoid over-drying [1][2].
These recommendations align with expert advice, emphasising that overwashing can disrupt the scalp’s natural lipid barrier and lead to dryness or irritation, while under-washing may allow buildup causing follicle irritation and slow hair growth [5].
Summary Table
| Hair Type | Washing Frequency | Key Considerations | |-----------------------|------------------------|-----------------------------------------------| | Straight or Fine | Every 2–3 days | Controls oiliness, lightweight products | | Wavy or Curly | Once or twice a week | Maintains moisture, sulfate-free shampoos | | Coily or Kinky (Type 4)| Once every 1–2 weeks | Gentle cleansing, deep conditioning, oils | | Oily Scalp | Daily or every other day| Clarifying shampoos to remove excess sebum | | Dry or Damaged | Every 4–7 days | Moisturizing products, avoid hot water | | Color-Treated | 1–2 times per week | Protect color, avoid over-stripping |
This guidance is supported by stylist recommendations, dermatological advice, and hair health best practices from multiple recent authoritative sources [1][2][3][5].
For those seeking alternatives to traditional shampoos, shampoo without detergent, such as natural or "no-poo" shampoos, can be an option. Additionally, cleansing conditioners provide some cleaning properties with the benefits of a conditioner, and can replace shampooing for some people. Dry hair shampoo is for those who have undergone chemical treatments and harsh styling procedures, providing good conditioning and mild cleansing.
References:
[1] American Academy of Dermatology Association. (n.d.). Hair Care. https://www.aad.org/public/diseases/hair-scalp/hair-care
[2] British Hair and Beauty Council. (2020). The Facts About Hair. https://www.british-hair-and-beauty-council.com/the-facts-about-hair/
[3] Cosmetic Toiletry and Perfumery Association. (n.d.). Hair Care. https://www.ctpa.org.uk/consumer-information/hair-care/
[4] University of California, Berkeley. (2019). The Science of Hair Washing. https://www.berkeley.edu/news/media/releases/2019/01/23_hairwashing.shtml
[5] University of California, Berkeley. (2019). The Science of Hair Washing: The Ideal Frequency. https://www.berkeley.edu/news/media/releases/2019/01/23_hairwashingfrequency.shtml
In the realm of health-and-wellness, adopting a science-based hair care routine is essential for maintaining scalp health. For instance, individuals with oily scalps should opt for daily or alternating-day washes using clarifying shampoos to control excess sebum and prevent buildup. On the other hand, coily or kinky hair, the driest and most fragile hair type, should be washed every 1–2 weeks, with the inclusion of gentle shampoos, deep conditioning, and oil treatments for preserving moisture.
