A patch test is a controlled skin exposure test used to help identify contact allergies. It places small amounts of suspected allergens on the skin under adhesive patches for a set time. A patch test is commonly used in dermatology and can be relevant to both cosmetic and reconstructive care when material sensitivities matter. It helps distinguish allergic contact dermatitis from other causes of rash, irritation, or delayed skin reactions.

A chemical exfoliant is a substance applied to the skin to help shed dead surface cells using a chemical reaction rather than friction. It is most commonly used in cosmetic skin care and office-based skin resurfacing (chemical peels). Depending on the strength and formula, it may be used at home (cosmeceuticals) or in a clinical setting (professional peels). Its goals are typically appearance-focused (texture, tone), but it may also support pre- and post-procedure skin optimization in some practices.

A physical exfoliant is a product or technique that removes surface skin cells through gentle mechanical action. It typically works by rubbing or sweeping particles or a tool across the skin to smooth texture. It is commonly used in cosmetic skincare at home and in clinics (for example, microdermabrasion or dermaplaning). It may also be discussed in reconstructive contexts when clinicians optimize skin condition around scars or healing areas.

An exfoliant is a product or method used to remove dead cells from the surface of the skin. It is commonly used in cosmetic skin care to improve texture, tone, and surface smoothness. Exfoliant use can be part of pre-procedure skin preparation and post-procedure maintenance in aesthetic practice. In reconstructive settings, it may be used to support overall skin quality, depending on the clinical goal.

spot treatment is a targeted treatment applied to a specific, limited area rather than a broad region. In cosmetic care, it commonly refers to treating an individual blemish, dark spot, or small area of texture change. In reconstructive and dermatologic settings, it can also describe lesion-directed care for a single scar, vascular spot, or small growth. It is a general concept, not one single procedure, and the method varies by clinician and case.

eye cream is a topical skincare product formulated for the thin skin around the eyes (the periocular area). It is typically used for cosmetic concerns such as dryness, fine lines, uneven tone, and visible puffiness. It may also be used as supportive skincare around aesthetic procedures, depending on clinician preference and timing. It is a non-surgical product, not a reconstructive implant or injectable.

night cream is a topical skin-care product designed to be applied in the evening and left on the skin overnight. It is commonly formulated as a moisturizer, treatment, or both, often with ingredients intended to support skin hydration and barrier function. In cosmetic skin care, night cream is used to address visible concerns such as dryness and texture, and to complement other routines. In peri-procedure contexts (for example, around aesthetic treatments), clinicians may discuss night cream-type moisturizers as part of general skin maintenance, depending on the case.

serum is a term used in both medicine and skincare. In clinical medicine, serum is the liquid portion of blood after it has clotted, commonly used for laboratory testing. In cosmetic and dermatologic care, a serum is a lightweight topical product designed to deliver concentrated ingredients to the skin. Both meanings may appear in cosmetic and reconstructive settings (for example, pre-procedure lab work vs post-procedure skincare).

An essence is a lightweight, water-based or water-rich topical skincare product used after cleansing and before thicker products. It is designed to support hydration and skin conditioning, and sometimes targeted concerns like uneven tone or texture. In cosmetic care, essence is most commonly part of non-procedural skin maintenance rather than a surgical treatment. It may be used alongside professional aesthetic treatments, but it is not itself a medical procedure.

toner is a liquid skincare product applied after cleansing and before moisturizer or treatment products. It is used to help condition the skin surface and support the skin barrier. Depending on the formula, toner may hydrate, soothe, or provide gentle exfoliation. It is commonly used in cosmetic skincare routines and may be discussed in peri-procedure skincare planning.

micellar water is a water-based skin cleanser that contains mild surfactants arranged into “micelles,” which can lift oils and debris from the skin. It is commonly used in everyday cosmetic skincare to remove makeup, sunscreen, and surface impurities. In clinical and peri-procedure settings, it may be discussed as a gentle cleansing option, but it is not a surgical product or sterile skin prep.

A foaming cleanser is a face or body cleanser that produces foam during use. It is designed to lift oils, sweat, sunscreen, and debris from the skin’s surface. It is commonly used in everyday cosmetic skincare and in clinician-directed pre- and post-procedure routines. In surgical settings, related foaming “scrub” cleansers may be used for skin preparation, depending on protocol.

A cleanser is a topical product used to remove dirt, oil, sweat, sunscreen, and makeup from the skin’s surface. It is a routine part of daily skincare and is also used around cosmetic and reconstructive care. In clinical settings, specific cleansers may be used to reduce surface contaminants before or after certain procedures. Formulas vary widely by ingredients, strength, and intended skin type.

A humectant is an ingredient that attracts and holds water to help hydrate skin and other tissues. It is commonly used in cosmetic skincare (moisturizers, serums, cleansers) and in clinical skin-care products. In reconstructive and post-procedure settings, it may be included in moisturizers or dressings to support comfort and surface hydration.

An occlusive is a material or product that forms a barrier over skin or a wound. It reduces water loss from the surface and helps keep the area moist. In cosmetic and plastic care, occlusive is commonly discussed in wound dressings, scar care, and skincare “barrier” products. It is used in both cosmetic settings (post-procedure healing) and reconstructive settings (surgical wound management).

An emollient is a topical product that softens and smooths the outer layer of skin. It is commonly used to reduce dryness and improve skin comfort by supporting the skin barrier. In cosmetic and plastic care, it is often part of peri-procedure skincare on intact skin and during recovery when appropriate. It is used in both cosmetic and reconstructive contexts when skin dryness, irritation, or barrier disruption is a concern.

A moisturizer is a topical skincare product designed to reduce skin dryness and improve skin comfort. It is commonly used in everyday cosmetic skincare and as supportive care around some dermatologic and cosmetic procedures. A moisturizer can be a lotion, cream, gel, or ointment, with different ingredients chosen for different skin types and goals. In clinical settings, it is often discussed as part of “barrier care,” meaning support of the skin’s protective outer layer.

barrier repair refers to restoring the skin’s protective “barrier” so it can better retain moisture and block irritants and microbes. It commonly involves topical skincare, protective dressings, and adjustments to irritating routines. In cosmetic medicine, it is often discussed before and after procedures that temporarily disrupt the outer skin layers. In reconstructive settings, the same concept applies to supporting wound coverage and healthy healing.

fragrance-free means a product is formulated without added fragrance ingredients intended to create or modify scent. It is most commonly used to describe skincare, cleansers, wound-care products, and cosmetics. In cosmetic and plastic surgery settings, it is often discussed for pre- and post-procedure skin support and scar care. It can be relevant in both cosmetic and reconstructive care when skin sensitivity is a concern.

– hypoallergenic describes products or materials designed to be less likely to trigger an allergic reaction. – It is commonly used for skincare, cosmetics, dressings, and medical device materials. – In cosmetic and plastic surgery, it may apply to tapes, adhesives, sutures, implants, and post-procedure skincare. – It does not mean “allergy-proof,” and reactions can still occur depending on the individual and the ingredients or components.