Core Viewpoint - Hair splitting, known medically as "hair shaft abnormalities," indicates that hair is unhealthy and requires attention [3][4] Group 1: Understanding Hair Shaft Abnormalities - Hair is a specialized structure of the skin, primarily composed of keratin, which is also found in nails and other skin layers [3] - Hair shaft abnormalities encompass various issues, including split ends, which differ from hair loss that originates from follicle problems [3][4] - Common manifestations of hair shaft abnormalities include split ends, hair fragility, changes in appearance and texture, tangling, difficulty in combing, thinning, and slow growth [5][6] Group 2: Causes of Hair Shaft Abnormalities - The majority of hair shaft abnormalities are caused by external factors such as mechanical, chemical, and thermal damage [8][11] - Mechanical damage can occur from excessive brushing, rough towel drying, and tight hairstyles, leading to structural loss and shine [14] - Chemical damage arises from hair treatments like dyeing and perming, which can break down keratin and damage the hair cuticle [15][16] - Thermal damage is caused by high temperatures from styling tools, leading to internal hair damage and increased fragility [18][21] Group 3: Solutions for Healthy Hair - To maintain healthy hair, it is essential to minimize negative impacts by avoiding harsh mechanical actions and excessive heat [22][23] - Regular use of conditioners can help protect hair by addressing surface abnormalities and improving texture [26][27] - Cutting hair shorter can reduce mechanical damage and the risk of split ends, providing a quick solution to improve hair health [28]

Core Viewpoint - Hair issues are not limited to hair loss; split ends are also a significant concern, indicating underlying hair health problems [1][3] Group 1: Hair Structure and Abnormalities - Hair is a specialized structure known as "hair shaft," primarily composed of keratin, which is also found in nails and animal hooves [4] - Abnormalities in hair structure, termed "hair shaft abnormalities," differ from hair loss, which is related to follicle issues [4][6] - There are two classifications of hair shaft abnormalities based on hair brittleness, which can lead to breakage or structural irregularities without breakage [4][6] Group 2: Causes of Hair Shaft Abnormalities - External factors are the primary causes of hair shaft abnormalities, including mechanical, chemical, and thermal damage [6][7] - Mechanical damage can occur from excessive brushing, rough towel drying, and tight hairstyles, leading to structural loss and dullness [9][10] - Chemical damage arises from hair treatments like dyeing and perming, which can weaken the hair structure due to harsh chemicals [11][12] - Thermal damage from tools like hair dryers and straighteners can create internal bubbles in the hair, leading to fragility [13][14] - Environmental factors such as UV exposure, humidity, and pollution can also contribute to hair damage, particularly from prolonged sun exposure [14] Group 3: Solutions for Healthy Hair - Recommendations to maintain healthy hair include reducing mechanical damage by avoiding harsh treatments and minimizing heat exposure [16][17] - The use of conditioners is advised to help repair damaged hair surfaces and improve manageability [15][17] - Shortening hair length can reduce mechanical stress and the risk of damage, particularly for individuals with long hair [15][18]