（《别录》）
【释名】梳上者名百齿霜。
弘景曰∶《术》云，头垢浮针，以肥腻故耳。今当用悦泽人者，其垢可丸也。
【气味】咸、苦，温，有毒。
【主治】淋闭不通（《别录》）。疗噎疾，酸浆煎膏用之，立愈。又治劳复（弘景）。中蛊
毒、蕈毒，米饮或酒化下，并取吐为度（大明）。
【附方】旧八，新十六。
天行劳复∶含头垢枣核大一枚，良。（《类要》）
预防劳复∶伤寒初愈，欲令不劳复者。头垢烧研，水丸梧桐子大，饮服一丸。（《外台
秘要》）
头身俱痛烦闷者∶头垢豆许，水服。囊盛蒸豆，熨之。（《肘后》）
小儿霍乱∶梳垢，水服少许。
小儿哭疰∶方同上。
百邪鬼魅∶方同上。（并《千金》）
妇人吹乳∶百齿霜，以无根水丸梧桐子大。每服三丸，食后屋上倒流水下，随左右暖卧，
取汗甚效。或以胡椒七粒，同百齿霜和丸，热酒下，得汗立愈。（《卫生宝鉴》）
妇人乳疖∶酒下梳垢五丸，即退消。
妇人足疮，经年不愈，名裙风疮。用男子头垢，桐油调作隔纸膏，贴之。（并《简便》）。
胫生疮∶头垢、枯矾研匀，猪胆调敷。（《寿域方》）
下疳湿疮∶蚕茧盛头垢，再以一茧合定， 红，出火毒研，搽。（杨氏）
小儿紧唇∶头垢涂之。（《肘后方》）
菜毒脯毒∶凡野菜、诸脯肉、马肝、马肉毒。以头垢枣核大，含之咽汁，能起死人。或
白汤下亦可。（《千金方》）
自死肉毒∶故头巾中垢一钱，热水服，取吐。
犬毒人∶头垢、 皮等分，烧灰，水服一杯。口噤者灌之。犬咬人疮重发者。以头垢
少许纳疮中，用热牛屎封之。
诸蛇毒人∶梳垢一团，尿和敷上。仍炙梳出汗，熨之。（并《千金方》）
蜈蚣螫人∶头垢、苦参末，酒调敷之。（《箧中》）
蜂虿螫人∶头垢封之。
虫蚁螫人∶同上。（并《集简》）
竹木刺肉不出∶头垢涂之，即出。（刘涓子）
飞丝入目∶头上白屑少许，揩之即出。（《物类相感志》）
赤目肿痛∶头垢一芥子，纳入取泪。（《摘玄方》）
噫吐酸浆∶浆水煎头垢豆许，服一杯效。（《普济方》）
（出自《名医别录》）
【释名】梳子上刮下来的头垢称为“百齿霜”。
陶弘景说：《术》书中记载，头垢能浮在针上，是因为含有油脂和腻物的缘故。现在应当选用能使皮肤润泽的，那种头垢可以捏成丸剂。
【主治】治疗淋证闭塞不通（出自《名医别录》）。治疗噎膈疾病，用酸浆水煎煮成膏服用，立即痊愈。又用于治疗劳复（出自陶弘景）。治疗中蛊毒、菌蕈毒，用米汤或酒送服，以吐出为度（出自孟诜《食疗本草》）。
【附方】旧方八首，新方十六首。
天行病导致的劳复：含一枚如枣核大小的头垢，效果良好。（出自《类要》）
预防劳复：伤寒刚痊愈，为了防止因劳累而复发。将头垢烧成灰研末，用水泛制成梧桐子大小的药丸，每次饮水送服一丸。（出自《外台秘要》）
头身俱痛且烦闷者：取豆许大小的头垢，用水送服。用布袋装蒸熟的豆子，热敷患处。（出自《肘后备急方》）
小儿哭疰（一种小儿传染病）：方剂同上。
百邪鬼魅（指精神异常或受惊吓等病症）：方剂同上。（均出自《千金方》）
妇人吹乳（急性乳腺炎）：用百齿霜，以无根水（雨水或露水）泛制成梧桐子大小的药丸。每次服用三丸，饭后饮用从屋顶流下的倒流水，向暖和的一侧卧睡，出汗后疗效显著。或者用七粒胡椒与百齿霜混合制丸，用热酒送服，出汗后立即痊愈。（出自《卫生宝鉴》）
妇人足部疮疡，多年不愈，名为裙风疮。使用男子的头垢，用桐油调制成隔纸膏，贴敷患处。（均出自《简便单方》）
小腿生疮：将头垢、枯矾研匀，用猪胆汁调和后外敷。（出自《寿域神方》）
下疳湿疮：用蚕茧盛装头垢，再用一个蚕茧封口，煅烧至红，去除火毒后研末，涂抹患处。（出自杨氏）
菜毒、脯肉毒：凡是野菜、各种干肉、马肝、马肉引起的中毒。含一枚如枣核大小的头垢，咽下汁液，能救活濒死之人。或用白开水送服也可以。（出自《千金方》）
犬毒伤人：头垢、狗皮各等份，烧成灰，用水送服一杯。对于牙关紧闭的患者，灌服。犬咬人后伤口严重复发的，取少许头垢纳入疮口中，用热的牛粪封裹。
诸蛇咬伤：取一团梳垢，用尿液调和敷在患处。仍将梳子加热使其出汗，用来熨烫患处。（均出自《千金方》）
蜈蚣螫伤：将头垢、苦参末，用酒调匀后外敷。（出自《箧中方》）
虫蚁螫伤：同上。（均出自《集简方》）
飞丝入目：取头上少许白屑，擦拭眼睛，飞丝即出。（出自《物类相感志》）
(From *Bie Lu* [Separate Records])
[Names] The scum scraped from combs is named "Hundred-Tooth Frost" (Baichi Shuang).
Hongjing stated: The text *Shu* records that head scum floats on needles due to its greasy and oily nature. Currently, one should use the kind that moistens and beautifies the skin; such scum can be formed into pills.
[Flavor and Properties] Salty, bitter, warm, toxic.
[Indications] Treats strangury with urinary obstruction (from *Bie Lu*). Cures yijing (dysphagia/choking disease) by decocting it in sour bean juice to make a paste; recovery is immediate. Also treats laofu (relapse of illness due to overexertion after recovery) (from Hongjing). Treats gu poison (poisoning from mysterious substances or insects) and xun poison (mushroom poisoning); dissolve in rice water or wine and administer orally, stopping when vomiting occurs (from Ming).
[Attached Formulas] Eight old formulas, sixteen new formulas.
Laofu caused by epidemic febrile diseases: Hold one piece of head scum the size of a jujube pit in the mouth; this is effective. (*Lei Yao*)
Preventing laofu: When a patient has just recovered from shanghan (cold damage disease) and one wishes to prevent relapse due to exertion. Burn the head scum to ash, grind it, and make pills the size of paulownia seeds using water. Take one pill with water. (*Waitai Miyao*)
For headache and body pain accompanied by irritability: Take a amount of head scum the size of a soybean, take with water. Fill a bag with steamed beans and apply as a hot compress. (*Zhouhou Beiji Fang*)
Pediatric huoluan (cholera-like acute gastroenteritis): Take a small amount of comb scum, take with water.
Xiao'er kuzhu (pediatric infectious disease characterized by crying): Same formula as above.
Various evil spirits and ghosts (referring to mental disturbances or fright): Same formula as above. (All from *Qianjin Fang*)
Women's chuisru (acute mastitis): Use Baichi Shuang, form pills the size of paulownia seeds using wugen water (rainwater or dew). Take three pills per dose. After meals, drink "reverse-flowing water" (water running down from the roof), lie comfortably on the warmer side, and induce sweating for significant effect. Alternatively, mix seven grains of pepper with Baichi Shuang, form pills, and take with hot wine; sweating leads to immediate cure. (*Weisheng Baojian*)
Women's ruji (breast furuncle): Take five pills of comb scum with wine; they will subside immediately.
Women's foot sores, chronic and unhealed for years, known as qinfengchuang (skirt wind sore). Use male head scum, mix with tung oil to make a plaster applied through paper, and stick to the affected area. (All from *Jianbian Danfang*)
Sores on the lower leg: Grind head scum and alum evenly, mix with pig bile, and apply externally. (*Shouyu Fang*)
Gan chan wet sores (genital ulcers with dampness): Fill a silkworm cocoon with head scum, seal it with another cocoon, calcine until red, remove fire toxicity, grind, and apply topically. (Yang Shi)
Xiao'er jin chun (tight lips in infants): Apply head scum topically. (*Zhouhou Fang*)
Vegetable poison and dried meat poison: For poisoning from wild vegetables, various dried meats, horse liver, or horse meat. Contain a piece of head scum the size of a jujube pit, swallow the juice; it can revive the near-dead. Taking with plain boiled water is also acceptable. (*Qianjin Fang*)
Poison from dead meat: Take one qian of scum from an old head towel, take with hot water, and induce vomiting.
Dog venom injuring humans: Mix equal parts of head scum and dog skin, burn to ash, and take one cup with water. If the patient has trismus (lockjaw), force-feed the mixture. For severe recurrence of wounds from dog bites: put a small amount of head scum into the wound, and seal it with hot cow dung.
Snake bites: Take a ball of comb scum, mix with urine, and apply topically. Heat the comb until it sweats, then use it to moxa/compress the area. (All from *Qianjin Fang*)
Centipede stings: Mix head scum and powder of Sophora root (Kushen), blend with wine, and apply topically. (*Qie Zhong Fang*)
Wasp/scorpion stings: Seal the area with head scum.
Insect/ant stings: Same as above. (All from *Ji Jian Fang*)
Splinters of bamboo or wood embedded in flesh: Apply head scum; the splinter will emerge. (Liu Juanzi)
Flying silk entering the eye: Take a small amount of white dandruff from the head, rub the eye; the silk will come out. (*Wulei Xianggan Zhi*)
Red eyes with swelling and pain: Insert a mustard-seed-sized amount of head scum into the eye to induce tearing. (*Zhaxuan Fang*)
Belching and vomiting of sour fluid: Decoct a soybean-sized amount of head scum in jiangshui (fermented grain water), take one cup; effective. (*Puji Fang*)