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Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.

Permed hair degrades faster and shows more damage after protease treatment compared to untreated hair.

The enzymatic method can effectively identify chemical treatments on hair.

Heavy metals in personal care products can cause serious health issues like cancer and hair loss.

Hair dyes and perms can damage hair and scalp, but using interventions can reduce harm.

Wild peach leaf extract improves hair strength, thickness, and shine after dyeing.

The review explains how hair products work and the science of different hair types to help improve hair care research.

Facial dark spots can be caused by the sun, genetics, makeup, or medicine, and are diagnosed by patient history and skin tests.

Use some skin medications with caution during pregnancy; avoid strong steroids, certain eczema treatments, and systemic retinoids, but many topical treatments and nasal sprays are safe.

Many substances, including chemicals and metals, can cause skin reactions; careful handling and identification of allergens are crucial to prevent dermatitis.

Nanocarrier technology in cosmetics improves ingredient delivery and effectiveness while reducing side effects.

Early treatment is key for permanent hair loss disorders, with options ranging from medications and phototherapy to immunomodulators and antibiotics, depending on severity and type.

Primary cicatricial alopecia, a rare disorder causing permanent hair loss, is hard to diagnose and treat, with treatments like anti-inflammatory drugs and steroids offering varied results and no guaranteed cure. Psychological support for patients is important, and future research should aim to identify causes of the condition.

Macroalgae compounds offer sustainable, effective benefits for cosmetics.

Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.

Men with a certain type of hair loss often use facial moisturizers, and a specific antibiotic treatment may help another hair condition.

Natural plant-based substances can be used as effective hair dyes.

The document summarizes the latest trends and advancements in cosmetic dermatology.

Companies agreed to stop false advertising about their products' health benefits.

Companies agreed to stop making false health claims about their products.

The document concludes that proper diagnosis and a combination of medical, hair-care, and surgical treatments are important for managing alopecia in black women.

Fullerenes show potential in skin care but need more safety research.

Lichen Planopilaris and Frontal Fibrosing Alopecia may help us understand hair follicle stem cell disorders and suggest new treatments.

Nanomaterials can improve hair care products and treatments, including hair loss and alopecia, by enhancing stability and safety, and allowing controlled release of compounds, but their safety in cosmetics needs more understanding.

Bioassays help find useful compounds in nature for making medicines, supplements, and cosmetics.

Hair straightening changes hair structure and can cause damage if done wrong, but improvements in the methods are expected to continue.

Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.

Hair grays due to oxidative stress and fewer functioning melanocytes.

Plant cell culture is a promising method for creating sustainable and high-quality cosmetic ingredients.

Different ethnicities and treatments affect human hair strength and structure.