Innisfree Perfect 9 Repair Skin Toner

1,2-Hexanediol is a multifunctional ingredient widely used in skincare and cosmetic formulations. This colorless, low-viscosity liquid belongs to the aliphatic alcohol family and serves as a versatile humectant, preservative enhancer, and solvent. Its molecular structure allows it to attract and retain moisture, contributing to improved hydration in skincare products.

As a preservative booster, 1,2-Hexanediol works synergistically with traditional preservatives, enhancing their efficacy and allowing for lower concentrations of potentially irritating antimicrobial agents. This property makes it particularly valuable in formulating gentle, yet microbiologically stable products.

In addition to its preservative-enhancing capabilities, 1,2-Hexanediol functions as an effective solvent, aiding in the dissolution and dispersion of active ingredients and fragrances. This characteristic improves the overall stability and sensory properties of cosmetic formulations.

The ingredient also exhibits emollient properties, contributing to a smooth and pleasant skin feel. Its low molecular weight allows for easy penetration into the stratum corneum, potentially enhancing the delivery of other active ingredients.

While generally well-tolerated, as with any skincare ingredient, patch testing is recommended for individuals with sensitive skin or a history of allergic reactions.

Adenosine is a naturally occurring purine nucleoside that plays a crucial role in various biological processes, including energy transfer and signal transduction. In skincare, adenosine has gained significant attention for its potential anti-aging and skin-soothing properties. This molecule acts as a cell-communicating ingredient, interacting with specific receptors on skin cells to promote beneficial effects.

Research has shown that adenosine can stimulate collagen production in the dermis, potentially improving skin elasticity and reducing the appearance of fine lines and wrinkles. It also exhibits anti-inflammatory properties, which may help calm irritated skin and reduce redness. Additionally, adenosine has been found to enhance the skin's barrier function, potentially improving hydration and overall skin health.

Topical application of adenosine is generally well-tolerated, with minimal risk of adverse reactions. It is often incorporated into serums, creams, and other skincare formulations at concentrations ranging from 0.01% to 0.1%. While more research is needed to fully elucidate its long-term effects, adenosine shows promise as a multifunctional skincare ingredient, particularly for those seeking anti-aging and skin-soothing benefits.

Beta-glucan is a naturally occurring polysaccharide found in various sources, including oats, barley, mushrooms, and yeast. This versatile ingredient has gained significant attention in the skincare industry due to its multifaceted benefits for skin health and appearance.

As a powerful humectant, beta-glucan attracts and retains moisture, helping to hydrate and plump the skin. Its molecular structure allows it to penetrate deeply into the epidermis, providing long-lasting hydration. Beta-glucan also exhibits potent antioxidant properties, protecting skin cells from free radical damage and environmental stressors.

Research has shown beta-glucan to have anti-inflammatory effects, making it beneficial for soothing irritated skin and reducing redness. It may also stimulate collagen production, potentially improving skin elasticity and reducing the appearance of fine lines and wrinkles.

Beta-glucan supports the skin's barrier function, enhancing its ability to retain moisture and defend against external aggressors. This ingredient is well-tolerated by most skin types, including sensitive skin, and can be incorporated into various skincare formulations such as serums, moisturizers, and masks for optimal results.

Betaine, also known as trimethylglycine, is a naturally occurring compound found in various plants and animals. This versatile ingredient has gained significant attention in skincare formulations due to its multifaceted benefits. As a powerful humectant, betaine attracts and retains moisture in the skin, helping to maintain hydration levels and improve overall skin texture.

One of betaine's key attributes is its ability to function as an osmolyte, regulating cellular water balance and protecting against environmental stressors. This property makes it particularly effective in strengthening the skin barrier and enhancing its resilience. Additionally, betaine exhibits anti-inflammatory properties, which can help soothe irritated skin and reduce redness.

In skincare products, betaine is often used in concentrations ranging from 1% to 5%. It is compatible with a wide range of other ingredients and can be incorporated into various formulations, including serums, moisturizers, and cleansers. Betaine's gentle nature makes it suitable for all skin types, including sensitive skin. Its stability across different pH levels and temperatures further enhances its versatility in product formulation.

Carbomer is a synthetic polymer widely used in cosmetic and pharmaceutical formulations as a thickening agent, emulsifier, and stabilizer. This high-molecular-weight compound is composed of acrylic acid monomers cross-linked with allyl sucrose or allyl pentaerythritol. Its ability to form clear, stable gels at low concentrations makes it invaluable in various skincare products.

In aqueous solutions, carbomer swells to form a three-dimensional network, providing viscosity control and a smooth, luxurious texture to creams, lotions, and gels. Its pH-dependent behavior allows for precise rheology modification, enhancing product stability and shelf life. Carbomer is particularly effective in oil-in-water emulsions, where it helps prevent phase separation and improves product consistency.

This ingredient is generally well-tolerated by most skin types and is considered non-comedogenic. It can help suspend and stabilize active ingredients, ensuring uniform distribution throughout the product. Carbomer's film-forming properties also contribute to improved moisture retention in the skin, making it beneficial in hydrating formulations.

Citronellol is a naturally occurring terpene alcohol found in various essential oils, including rose, geranium, and citronella. This versatile ingredient is widely used in skincare and cosmetic formulations due to its pleasant floral scent and beneficial properties. Citronellol exhibits antimicrobial and anti-inflammatory characteristics, making it valuable for addressing skin concerns such as acne and irritation.

In skincare products, citronellol functions as a fragrance component and a skin-conditioning agent. It helps to mask unpleasant odors and imparts a fresh, uplifting aroma to formulations. Additionally, its ability to penetrate the skin allows it to deliver potential benefits beyond its aromatic properties.

Research suggests that citronellol may possess antioxidant properties, potentially helping to neutralize free radicals and combat oxidative stress in the skin. It also demonstrates insect-repellent qualities, which can be advantageous in outdoor-oriented skincare products.

While generally well-tolerated, citronellol can cause sensitization in some individuals, particularly those with fragrance allergies. As with any fragrant ingredient, patch testing is recommended before widespread use. Formulators typically incorporate citronellol at concentrations below 1% to minimize the risk of adverse reactions while maintaining its beneficial effects.

Cyclohexasiloxane is a synthetic silicone compound widely used in cosmetic and personal care products. This clear, odorless liquid belongs to the cyclic siloxane family and is known for its excellent spreading properties and lightweight feel on the skin. Its molecular structure consists of six silicon-oxygen units arranged in a ring, giving it unique characteristics that make it valuable in skincare formulations.

As a volatile silicone, cyclohexasiloxane evaporates quickly upon application, leaving behind a smooth, non-greasy finish. This property makes it an ideal ingredient for primers, foundations, and other cosmetic products where a silky texture is desired. It also acts as an effective carrier for other active ingredients, enhancing their penetration into the skin.

Cyclohexasiloxane is prized for its ability to improve the texture and appearance of various skincare and haircare products. It helps reduce the tackiness of formulations, enhances product spreadability, and creates a soft, velvety feel on the skin. While generally considered safe for cosmetic use, some concerns have been raised about its potential environmental impact, leading to ongoing research and regulatory scrutiny in certain regions.

Cyclopentasiloxane is a versatile silicone-based compound widely used in skincare and cosmetic formulations. This colorless, odorless liquid belongs to the cyclomethicone family and is known for its excellent spreading properties and quick evaporation rate. Its low surface tension allows for smooth application across the skin, creating a silky, non-greasy feel.

In skincare products, cyclopentasiloxane functions primarily as an emollient and carrying agent. It helps to improve the texture and application of formulations, enhancing the overall sensory experience. The ingredient's ability to form a breathable, protective film on the skin makes it valuable in products designed to provide temporary barrier protection.

Cyclopentasiloxane is particularly effective in hair care products, where it imparts shine and smoothness without weighing down the hair. In makeup formulations, it aids in even pigment distribution and extends wear time. While generally considered safe for topical use, some concerns have been raised about its potential environmental impact, leading to ongoing research and regulatory discussions in certain regions. As with any cosmetic ingredient, individual sensitivities may vary, and patch testing is recommended for those with sensitive skin.

Dextrin is a versatile carbohydrate compound derived from the partial hydrolysis of starch. This polysaccharide plays a significant role in skincare formulations due to its multifaceted properties. As a natural humectant, dextrin attracts and retains moisture, helping to maintain skin hydration and improve overall texture.

In cosmetic applications, dextrin functions as an effective thickening and stabilizing agent, enhancing product consistency and shelf life. Its film-forming capabilities contribute to the creation of smoother, more even skin surfaces, temporarily reducing the appearance of fine lines and wrinkles.

Dextrin's molecular structure allows for gradual breakdown on the skin, making it an ideal carrier for active ingredients. This property enables controlled release of beneficial compounds, potentially improving their efficacy and longevity. Additionally, dextrin exhibits mild exfoliating properties, gently removing dead skin cells and promoting cellular turnover.

Research suggests that dextrin may have antioxidant properties, potentially offering protection against free radical damage. Its low allergenic profile makes it suitable for sensitive skin types. When incorporated into skincare formulations, dextrin can enhance product texture, improve skin feel, and contribute to overall skin health and appearance.

Dimethicone, also known as polydimethylsiloxane (PDMS), is a versatile silicone-based polymer widely used in skincare and cosmetic formulations. This synthetic ingredient is prized for its ability to create a smooth, silky texture and form a protective barrier on the skin's surface. Dimethicone is characterized by its clear, colorless appearance and its unique ability to spread easily without feeling greasy or heavy.

In skincare products, dimethicone functions as an emollient and occlusive agent, helping to reduce transepidermal water loss and maintain skin hydration. It also acts as an effective skin protectant, shielding against environmental stressors and irritants. Dimethicone's film-forming properties contribute to the temporary filling of fine lines and wrinkles, creating a smoother skin appearance.

This ingredient is generally well-tolerated by most skin types, including sensitive skin, and is non-comedogenic. It's commonly found in moisturizers, serums, primers, and foundations. Dimethicone's molecular structure allows it to blend well with other ingredients, enhancing the overall texture and performance of skincare formulations. While some concerns have been raised about its potential environmental impact, dimethicone remains a staple in many skincare products due to its efficacy and versatility.