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Cosmetic procedures can harm hair, but damage can be minimized with knowledge and care; however, once hair is damaged, it cannot be reliably repaired.

Environmental, chemical, mechanical, and personal health factors can all damage hair and contribute to hair loss or changes in hair quality.

The article concludes that advancements in hair cosmetics require dermatologists to stay informed about products and their potential risks, including allergies and higher risks for hairdressers.

Human hair structure varies by ethnicity, and certain treatments can improve hair condition and appearance.

Twisting hair weakens it, but strength can be recovered at low twist levels.

Dermatologists need to understand hair products to treat hair and scalp issues better.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

Plant-based ingredients in hair care are being replaced by synthetic alternatives.

DVI provides detailed 3D imaging of hair and shows how various products protect and enhance hair.

A new method helps understand hair shine and various products improve hair care.

Many people had severe allergic reactions to a common hair dye ingredient, causing them to seek medical care and miss work.

A woman lost most of her hair due to an allergic reaction to a hair dye ingredient.

Hydrogen peroxide and monoethanolamine in hair dye can cause dermatitis and hair loss.

Tight hairstyles, especially on chemically treated hair, can cause reversible hair loss if caught early but may become permanent if not addressed.

Most hair loss can be diagnosed with patient history and physical exam, and a few common types make up most cases.

Ecklonia cava extract can reduce the damage and stress caused by hair dye.

As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.

Using certain hair products may increase breast cancer risk in black women.

Some medications might reverse gray hair, especially those that reduce inflammation or stimulate pigment production, and vitamin B might help.

Hair India 2012 was a successful international event focused on combating fake trichology practices and discussing various hair health topics.

Hair breakage may be an early sign of a hair loss condition called CCCA in African American women.

Using hair dye may slightly increase the risk of non-Hodgkin's lymphoma, especially with long-term use.

Different countries have regulations to ensure the safety of hair care products, with some recalling hair straighteners due to high formaldehyde.

Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.

New hair products are being developed to keep hair and scalp healthy for everyone.

Hair sunscreens are important for maintaining hair's cosmetic value.

Detailed patient history and physical exams are crucial for diagnosing hair loss.

Understanding hair biology is key to developing better treatments for hair and scalp issues.

Dr. Vera H. Price's 1979 work emphasizes the importance of accurate diagnosis and personalized treatment for hair loss.

Hair ages due to various factors and treatments like minoxidil and finasteride can help, but more research and better public awareness are needed.