Water is a great solvent. It’s neutral and doesn’t provide any strong positive or negative effects. It just helps components to mix better and to transport active components.
Betaine is used a lot in “organic” skincare products. It is a good moisturizer that not only hydrates the skin but also strengthens the cell membrane. This helps to lower the water loss over time. It also softens the skin and reduces irritation and redness. It’s often used at a 3-5% concentration depending on the product.
Glycerin is one of the most outstanding and helpful skincare components. It's used in many skincare products because it works and provides notable results. It's one of the best moisturizers. Molecules of Glycerin can absorb water and deliver it into deep layers of the skin making it hydrated.
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Propanediol
Roles: Solvent, Viscosity controlling
Moisturizing
Hair conditioning
Propanediol is a good solvent, emollient and humectant. It helps to moisturize the skin and prevent moisture loss. In haircare products, it conditions hair and improves absorption of the product.
Xanthan Gum is used as a thickener or rheology modifier and emulsion stabilizer. It doesn’t provide any notable skin-related effects and is used mostly for formulation purposes. It makes the product’s texture smooth and even. It’s a naturally-derived thickener. Notable fact: it can also be found in the food you eat every day, so it is 100% safe.
Butylene Glycol is a very popular synthetic alcohol. It helps the product to absorb deeper and faster. It is also a solvent for other ingredients. As for the skin benefits, it helps to attract water and helps to make the skin softer.
1,2-Hexanediol can do a lot of good things for the formulation of the product. It’s an emollient, preservative, and humectant. It keeps skin hydrated and soft. It’s a good component for dry and dehydrated skin.
Alcohol Denatured is a great bacteria killer. Manufacturers often put it inside products to increase their shelf life.
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Lavandula Angustifolia (Lavender) Oil
Roles: Skin conditioning, Fragrance
Acne fighting
Healing
Antiseptic
Good for oily skin
Lavandula Angustifolia (Lavender) Oil is known for ages. It has a pleasant scent but it's not the only great property of this component. It has great antiseptic and antibacterial activity which is great for oily skin. It also helps to heal small wounds and calm down the skin.
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Limonene
Roles: Fragrance
Antiseptic
Allergens
Limonene provides a nice and fresh citrus scent. It can be found in many plants. It's used in cosmetics because of its low price and pleasant smell.
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Linalool
Roles: Deodorant, Fragrance, Masking
Allergens
Linalool gives the product a nice and fresh lavender scent. It can be found in many essential oils. It oxidizes during air exposure and becomes allergenic. It can lead to irritation causing problems for people with sensitive skin. The threat is even higher if the product was opened several months ago. In such products, more Linalool is oxidized.