Walnut shell solves many problems and discomforts (it is best to use ground walnut shell powder. The powder can be added to tonics, creams, lotions, body milk, shampoo, hair conditioner, etc.).
Many people who live in a house with a yard often have a walnut tree. Walnut is rich in nutrients, vitamins and minerals. It is recommended to consume walnuts as often as possible because it has a very positive effect on health.
Other parts of the walnut (such as the hard and soft shell) are rich in beneficial substances, so these parts can also be used wisely. Research says that walnut shells (in different forms) can be used to solve some health problems. Creams, peelings, natural hair dyes and other preparations are made from walnut shells.
The hard shell of a walnut contains plenty of minerals, and the soft green membrane of an unripe fruit has a similar composition. Each of these minerals is important for the normal work and functioning of the organism. The walnut shell is rich in phosphorus, which is unsuitable for the health of teeth, bones and muscle tissue, potassium, which acts as a diuretic (prevents fluid retention in the body) and contributes to the health of the cardiovascular system. Walnut shells contain high concentrations of iron and zinc (a mineral with powerful antioxidant properties that is essential for maintaining healthy skin, hair and nails). It also contains calcium and manganese (trace elements with a significant role in the proper functioning of metabolism and regulation of blood sugar levels). The walnut shell also contains tannins, carboxylic acids, phenols and iodine. The human body does not synthesize iodine and iodine can only be replaced by proper nutrition and supplements. This is important because the lack of iodine can cause some diseases (diabetes, diseases of the reproductive organs, thyroid glands, skin and minor ailments that impair the quality of life such as chronic malaise, nervousness, insomnia, etc.).

1. Walnut shell helps with weight loss – excess weight can be caused by various reasons, but the most common are slow metabolism, inadequate nutrition, the presence of parasites in the intestines or some other problems of the digestive tract. Walnut shells can help here (numerous studies say). The membrane contains essential fatty acids, various antioxidants, and iodine that stimulates the work of the thyroid gland (thus contributing to the proper functioning of the metabolism). Fats are broken down more efficiently if everything in the body is properly coordinated. Ellagic acid (which blocks metabolic processes that cause fluid retention in the body) is an important ingredient in walnut shells.
2. Walnut shell nourishes hair – walnut shell accelerates hair growth, highlights color, suppresses sebum production, softens dry hair, eliminates gray hairs (all due to the chemical composition of the shell). Cells regenerate faster due to zinc and the production of keratin (a protein that helps hair growth) is stimulated. Iron and calcium are allies of zinc, while manganese slows down the aging of the scalp. Rinsing the hair with the liquid (which contained the walnut shell) is beneficial because of the high concentrations of phosphorus (which protects the hair from breakage and shedding and enhances the shine of the hair).
3. Homemade natural preparation with walnut shells for hair treatment – crush or chop several walnut shells. Add the crushed shells to the pot of water. Cook for half an hour. Apply the cooled liquid to the entire length of the hair. Leave it for about one hour. Rinse the hair with warm water and wash with a mild shampoo in the usual way. The peel is also useful against ingrown hairs. Members of all generations have problems with gray hair and thin hair (due to exposure to the sun, stress, improper diet, excessive use of artificial preparations, etc.). Walnut shell has certain coloring properties.
4. Homemade peeling with walnut shell – it is desirable to periodically peel the skin, even if the person does not do it for aesthetic reasons. The skin thus adapts to external influences more quickly. This is especially recommended before the beginning of the winter (the skin is in front of the temptation of cold air) and the summer season (so that the skin can more easily adapt to the effects of the sun’s warm rays). The walnut shell is then an effective exfoliant and removes dead cells and blackheads. Ground or crushed shell is used for cosmetic preparations. The small scales have a natural hardness and do not break down in the product. This is how peeling is most effective because even stubborn layers of dead skin cells are removed. Preparations should not be placed near the cells of the eyes (area around the eyes) because they can damage the soft skin. It is best to use ground walnut shell powder. The powder can be added to tonics, creams, lotions, body lotions, shampoos, hair conditioners and the like. Recipe: mix one spoonful of honey and one spoonful of ground walnut shells. Apply to the skin with circular movements. Rub gently for a few minutes. Rinse with warm water.

https://www.nutstop.com/product/walnuts-in-shell/