What Does Your Hair Actually Need
Hair, a symbol of beauty, pride, health, and even political beliefs plays a central role in shaping our identity today, and it has been a constant part of our human essence throughout history. Our earliest ancestors were fully covered in hair, which was crucial in regulating body temperature and shielding the skin from sun exposure. Over time, human evolution led to a reduction in body hair, with scalp hair becoming predominantly aesthetic.
Today, our use of hair goes beyond its functional purposes, evolving into a form of self-expression and empowerment, as noted by Loren Krueger, an assistant professor of dermatology at Emory University. However, the significance of hair becomes apparent in times of health decline, with conditions like chemotherapy causing rapid hair loss due to the treatment’s impact on growing cells.
The hair care industry, valued in the billions, reflects society’s emphasis on maintaining healthy and expressive hair. Amidst a myriad of products claiming to promote hair growth, understanding the science behind hair is crucial for consumers. Hair consists of a visible shaft and a root connected to the skin, surrounded by a follicle promoting growth.
The lifecycle of scalp hair involves three phases: a growing phase, a transition phase, and a phase when it falls out. Various factors, including genetics and ethnicity, contribute to the diversity of hair characteristics, such as curl patterns, porosity, and thickness. Assessing healthy hair involves considering thickness, length, shine, and strength, while signs of poor hair health include excessive shedding, thin appearance, dullness, and damage.
Age-related changes in hair include decreased melanin production, resulting in lighter hair turning white. Hair loss increases, growth slows, and strands become more susceptible to environmental factors and thinner. Certain practices, such as tightly-pulled hairstyles, can lead to a form of hair loss called alopecia. Overcoloring one’s hair may damage the shaft, resulting in dullness and increased fragility.
Contrary to popular belief, hair care doesn’t necessarily require specific products, though regular washing is essential. Washing helps remove dead hairs, stimulating new growth. Factors like sebum production, fungal growth, and hair type influence washing frequency. While sulfate shampoos may benefit fine hair, sulfate-free options are ideal for curly or color-treated hair. Caution is advised against ingredients like formaldehyde, and individual sensitivity varies.
Hair care is a highly personal journey, with experimentation recommended to determine care frequency and suitable products. As Loren Krueger emphasizes, understanding what works for your hair involves personal exploration and consideration of factors like age and ethnicity, ensuring a tailored approach to hair care.