Core Viewpoint - The pursuit of beauty through hair, nail, and eyelash treatments carries health risks such as chemical allergies, infections, and damage, necessitating a focus on health as a priority in beauty practices [1] Hair Treatments - Hair dyeing and perming should not exceed two times a year due to the risk of allergic reactions to chemicals like para-phenylenediamine [2][8] - Certain populations should avoid hair treatments, including minors under 16, pregnant or breastfeeding women, individuals with allergic diseases, patients with serious illnesses, and those with damaged skin barriers [3][4][5][6][7] - Safety guidelines recommend controlling the frequency of treatments, separating dyeing and perming by at least two weeks, protecting the scalp, avoiding mixing products, conducting sensitivity tests, and ensuring thorough cleaning post-treatment [8][9][10][11] Nail Treatments - Nail products may contain harmful chemicals that can cause allergies and damage nails, with recommendations to space treatments at least 4-6 weeks apart and allow for 2-3 months of rest each year [12][13] - Proper practices include choosing reputable salons, using non-irritating products, avoiding aggressive nail care, and protecting against UV exposure during treatments [14][15] - Nail health can reflect overall health, with changes in color and shape indicating potential health issues that should be monitored [16] Eyelash Treatments - Eyelash extensions involve gluing artificial lashes to natural ones, posing risks of infections and damage if hygiene is not maintained [17] - Certain individuals, such as those with sparse lashes, allergies, existing eye conditions, or skin issues around the eyes, should avoid eyelash treatments [18][19][20][21] - Frequency of eyelash treatments should be strictly limited to special occasions, as regular use can lead to serious and irreversible damage to eye health [21]

Core Viewpoint - The pursuit of beauty through hair, nail, and eyelash treatments carries potential health risks, including chemical allergies and infections, emphasizing the need for health to be prioritized in beauty practices [1]. Hair Treatment - Hair dyeing and perming should not exceed two times a year due to the risk of allergic reactions to chemicals like para-phenylenediamine [2][7]. - Certain populations should avoid hair treatments, including minors under 16, pregnant and breastfeeding women, individuals with allergic diseases, major illness patients, and those with damaged skin barriers [3][4][5][6]. - Safety guidelines include controlling the frequency of treatments, separating dyeing and perming sessions by at least two weeks, protecting the scalp from chemicals, avoiding mixing different brands of products, conducting sensitivity tests before dyeing, and ensuring thorough cleaning post-treatment [7][8][9][10]. Nail Treatment - Nail products may contain harmful chemicals that can cause allergies and damage nails, necessitating a minimum interval of 4-6 weeks between treatments [11][12]. - Recommendations for nail health include choosing reputable salons, using non-irritating products, avoiding aggressive nail care practices, and protecting against UV exposure during treatments [12][13]. - Changes in nail color and shape can indicate underlying health issues, such as anemia or fungal infections, warranting attention [14]. Eyelash Treatment - Eyelash extensions involve gluing artificial lashes to natural ones, posing risks of infections if tools are not sanitized or if the technician is inexperienced [14]. - Certain individuals, such as those with sparse eyelashes, allergies, existing eye conditions, or skin wounds, should avoid eyelash extensions [15][16][17]. - It is crucial to limit the frequency of eyelash treatments to avoid cumulative damage to eye health, with recommendations to only use these services for special occasions [17].