well as decreased lipid level, ceramides, cholesterol and fatty acids. Hence, epidermal water level reduces on the scalp which causes dandruff (Harding et al.
2002). Rosemary and sage extracts are potentially used for dandruff. The extracts
are used for the treatment of greasy hair; hair loss, and skin as well as extract sage
massaged on the scalp could control dandruff, loss of hair, or hair falling. Thyme
essential oils also used to inhibit the dandruff, scalp rub to avert hair loss as well as
rosemary and thyme encourage hair health. Garlic extracts are used traditional
medicine for dandruff and as a vegetable, it includes potential medicinal properties
such as antifungal, antibacterial, antioxidant, antiseptic, tonic, and antiinflammatory (Agiga and Seki 2000). Garlic could not be used directly; it causes
burning sensation, contact dermatitis, and allergic reactions for some people.
Walnut leaves extracts are used in external applications for hair loss, itching,
eczema, acne, peeling, and dandruff as well as skin disorder treatment such as
itching, emollient, abrasions, frostbite, treatment for sun burns, and nappy rashes as
well as dandruff and scalp problems (Aburjai and Natsheh 2003).
Hair coloring.
For hair coloring, vegetable oils are usually recommended, because of low allergenic power. For hair color, natural products do not have great advance, sinceplant
extract dyes or natural dyes are unstable in solution form, liable to oxidation, pH
color shift, fading and discoloration and single dye may not give right color for hair.
But only walnut and henna are suitable for hair color by mixing of leaves of other
plants (Aburjai and Natsheh 2003). L. inermis is known as henna. It is used for hair
color, feet, and hand color as well as used for certain skin disorders. Henna consists
of lawsone chemical constituent, which is responsible for developing red color in
henna. The chemical constituent is isolated from leaves as brown powder. Lawsone
has strong binding capacity to the hair, due to the chemical reaction between thiol
groups with keratin. German chamomile leaves extracts consist of apigenin flavonoids, which could be used for dull golden yellow color as well as flowers extracts
are used for hair rinse. Turmeric also is used for hair color to convert yellow to deep
orange color which is due to Curcumin pigment present, which is responsible for
yellow color of herb. H. sabdariffa L. extracts show red color due to extracts
composed of red color anthocyanidins such as delphinidin could be used. But red
color depends on pH of the solution.
19.7.3 Essential Oils Used as Cosmetics
Essential oils are the complex and composition of mixtures. Aromatic and
medicinal plants and its oils have been used in perfumes, cosmetics, medicines, and
culinary applications. Essential oils could be used for bath and skin massage, as
scent (inhaled directly or diffused). Since ancient time, essential oils are used for
pain relief, tension alleviation, skin care, fatigue, produce sense of relaxation and
revitalize the entire body which is potential benefit for cosmetics. Essential oils and
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