肾主发。经云∶肾之合血也，其荣发者是也。
〔海〕张天师草还丹 此药久服轻身，随风而去，如列子之乘虚也，若发白者从根而黑，如未白者永不白。
有不信者，将药拌饭与白猫吃，一月即黑。
地骨皮 生地 石菖蒲 牛膝 远志（去心） 菟丝子（酒浸三宿，炒黄）
上冬等分，为细末，炼蜜丸，如桐子大。每服三十丸，空心温酒送下。盐汤亦得。修制忌女人鸡犬见。（此
上少阴下厥阴药也。）
〔垣〕青丝散 补虚牢牙，黑髭须。
香白芷 白茯苓（各五钱） 母丁香 细辛 当归 川芎 甘草 甘松（各三钱） 升麻 旱莲草 地骨皮 生地
熟地 青盐 破故纸（各二钱） 寒水石（七钱， ） 香附米（一两，生姜汁浸一宿，炒） 何首乌（一两）
麝香（五分） 高茶末
上为细末，庚日为始，背东面西擦牙，早不见日，夜不见灯，刷毕咽药，余津润髭，一月白者顿黑。忌食
萝卜。
〔《本》〕治髭发黄黑。（方见牙动摇杂门方条。）
〔《草》〕李卿换白发方云∶刮老生姜皮一大升，于铛中以文武火煎之，不得令过沸，其铛惟得多油腻者尤
佳，更不须洗刮，便以姜皮置铛中密封固济，勿令通气，令一精细人守之，地色未分时，便须煎之，缓缓不得
令火急，如其人稍疲，即换人看火，一伏时即成，置于瓷钵中，研极细。李方虽曰一伏时，若火候匀，至日西
即药成也。使时以小簪脚蘸取如麻子大，先于白发下点药讫，然后拔之，再点，以手指熟 之，令入肉，第四
日当有黑者生，神效。
〔梅〕治年少发白，拔去白者。以白蜜涂毛孔中，即生黑发。不生，取桐子捣汁涂上，必生黑者。
〔《千》〕疗发黄。熊脂涂发梳之，散头入床底，伏地一食顷即出，便尽黑，不一升脂，验。
肾脏主管头发的生长。医经中说：“肾与血相合，其华在发”，说的就是这个道理。
〔海〕张天师的草还丹：此药长期服用可使人身体轻健，仿佛随风而去，如同列子乘风而行那样轻盈；如果头发已经变白，服用后能从根部变黑；如果头发尚未变白，则永远不会变白。
有人不信，便将药物拌入饭中喂给白猫吃，一个月后猫的毛色即变黑。
药材组成：地骨皮、生地黄、石菖蒲、牛膝、远志（去除心部）、菟丝子（用酒浸泡三个夜晚，炒至黄色）。
以上药材各等分，研成细末，用炼蜜制成丸药，大小如梧桐子。每次服用三十丸，空腹时用温酒送服。用盐汤送服也可以。制作和服用时忌讳女人、鸡、狗看见。（这是属于少阴经和下厥阴经的药物。）
〔垣〕青丝散：用于补虚固齿，使胡须变黑。
药材组成：香白芷、白茯苓（各五钱）、母丁香、细辛、当归、川芎、甘草、甘松（各三钱）、升麻、旱莲草、地骨皮、生地黄、熟地黄、青盐、破故纸（即补骨脂，各二钱）、寒水石（七钱，煅烧）、香附米（一两，用生姜汁浸泡一个夜晚，炒制）、何首乌（一两）、麝香（五分）、高茶末。
以上药材研成细末。从庚日开始，早晨面向东方、傍晚面向西方刷牙，早上不见太阳，晚上不见灯光，刷完牙后将药液咽下，剩余的津液滋润胡须，一个月后白色的胡须就会立刻变黑。忌食萝卜。
〔《本草》〕治疗胡须发黄变黑。（方剂见牙齿动摇杂病门方条。）
〔《草药》〕李卿的换白发方说：刮取老生姜皮一大升，放入铛中以文火或武火煎煮，不要让药液过度沸腾。这个铛最好是多油腻的，尤其好，更不需要清洗刮净，直接将姜皮放入铛中，密封坚固，不让气体泄漏，让一个细心的人看守。在地色未分时（指黎明前天色未明时），就开始煎煮，缓缓加热，不要让火势过急。如果看守的人稍微疲劳，就换人看火。经过一伏的时间（约两小时）即可制成，置于瓷钵中，研磨得极细。李方的说法是一伏时间，但如果火候均匀，到日落时分药就制成了。使用时用小簪脚蘸取如麻子大小的药量，先在白发处点药，然后拔掉白发，再点药，用手指揉搓使其渗入皮肤。第四天应当有黑发长出，效果神奇。
〔梅〕治疗年轻人头发变白，拔掉白发的方法：用白蜜涂抹于毛囊孔中，随即会长出黑发。如果不长，取桐子捣碎取汁涂抹，必定会长出黑发。
〔《千金方》〕治疗头发发黄。用熊脂涂抹头发并梳理，将头发散开钻入床底，趴在地上大约一顿饭的时间后出来，头发就会全部变黑，使用不超过一升熊脂，疗效确切。
The Kidney governs the hair. The classics state: "The Kidney harmonizes with blood, and its luster manifests in the hair," which refers to this principle.
[Ha] Zhang Tian Shi's Cao Huan Dan (Grass Return Pill): Long-term consumption of this medicine makes the body light and agile, as if drifting with the wind, similar to Liezi riding the void. If the hair has turned white, it will turn black from the root; if the hair has not yet turned white, it will never do so.
Some who did not believe tested it by mixing the medicine into rice and feeding it to a white cat; after one month, the cat's fur turned black.
Ingredients: Cortex Lycii (Digupi), Radix Rehmanniae Recens (Shengdi), Rhizoma Acori Tatarinowii (Shichangpu), Radix Achyranthis Bidentatae (Niuxi), Radix Polygalae (Yuanzhi, remove the heart), Semen Cuscutae (Tusizi, soaked in wine for three nights, stir-fried until yellow).
Take equal parts of the above ingredients, grind into fine powder, and make pills with refined honey, sized like paulownia seeds. Take 30 pills per dose, swallowed with warm wine on an empty stomach. Salt water is also acceptable. During preparation and administration, avoid exposure to women, chickens, and dogs. (These are medicines belonging to the Shaoyin and Lower Jueyin meridians.)
[Yuan] Qingsi San (Green Silk Powder): Tonifies deficiency, strengthens teeth, and darkens beard hair.
Ingredients: Rhizoma Angelicae Dahuricae (Xiangbaizhi) and Poria (Baifuling) (5 qian each); Mother Clove Bud (Mudingxiang), Radix Asari (Xixin), Radix Angelicae Sinensis (Danggui), Radix Chuanxiong (Chuanxiong), Radix Glycyrrhizae Uralensis (Gancao), and Radix Nardostachyos (Gansong) (3 qian each); Radix Cimicifugae (Shengma), Herba Ecliptae (Hanliancao), Cortex Lycii (Digupi), Radix Rehmanniae Recens (Shengdi), Radix Rehmanniae Praeparata (Shudi), Sal Quaternatum (Qingyan), Fructus Psoraleae (Poguzhi/Buguzhi) (2 qian each); Halloysitum Rubrum (Hanshuishi, calcined, 7 qian); Rhizoma Cyperi (Xiangfumie, 1 liang, soaked in ginger juice overnight, stir-fried); Radix Polygoni Multiflori Preparata (Heshouwu, 1 liang); Moschus (Shexiang, 5 fen); Gaocha powder.
Grind all ingredients into fine powder. Starting on a Geng day, brush teeth facing east in the morning and west in the evening. Avoid seeing sunlight in the morning and lamplight at night. Swallow the medicinal saliva after brushing, and let the remaining saliva moisten the beard. Within one month, white beard hair will turn black instantly. Avoid consuming radishes.
[Bencao] Treats yellowing or blackening of beard hair. (Formula see section on miscellaneous disorders of loose teeth.)
[Cao] Li Qing's formula for reversing white hair states: Scrape one large sheng of the peel of old ginger. Boil it in a pan over mild or strong fire, ensuring it does not boil excessively. The pan should preferably be well-oiled and need not be washed or scraped clean. Place the ginger peel in the pan, seal tightly to prevent gas leakage, and have a meticulous person guard it. Begin boiling when the ground color is indistinct (pre-dawn). Heat slowly; do not use intense fire. If the guardian becomes tired, replace them. After one fu period (approx. 2 hours), the preparation is complete. Place in a porcelain bowl and grind to an extremely fine powder. Although Li's formula specifies one fu period, if the heat is even, the medicine is ready by sunset. To use, dip the tip of a small hairpin into the powder (size of a hemp seed). Apply to the white hair root, then pluck the hair. Reapply and rub gently with fingers to allow penetration into the skin. On the fourth day, black hair should grow. This is remarkably effective.
[Mei] For treating premature whitening of hair in young people: Pluck out the white hairs. Apply white honey into the hair follicles; black hair will immediately grow. If it does not grow, apply juice extracted from crushed walnuts (Tongzi); black hair will certainly grow.
[Qianjin Fang] Treats yellowing of hair. Apply bear fat to the hair and comb it. Spread the hair out, crawl under the bed, and lie prone on the floor for about the time it takes to eat one meal. Upon emerging, the hair will turn completely black. Using no more than one sheng of bear fat yields verified results.