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Acne, rosacea, and similar disorders
Published in Rashmi Sarkar, Anupam Das, Sumit Sethi, Concise Dermatology, 2021
Some cosmetics contain comedo-inducing (comedogenic) agents, such as cocoa butter, isopropylmyristate, derivatives and some mineral oils, which can induce acne. With the availability of less comedogenic cosmetics, its prevalence has lessened. Use of thick, oil-based hair products contributes to acne development on the forehead, which is termed as pomade acne.
Prevention and Treatment of Dermatological Secondary Effects of Cancer Therapy
Published in Paloma Tejero, Hernán Pinto, Aesthetic Treatments for the Oncology Patient, 2020
This is a localized eruption on the face, trunk, and other areas rich in sebaceous glands, with papules and pustules associated with pain, itching, and discomfort. They are not comedogenic lesions and differ from acne due to their clinical and histopathological differences [9]. They affect more than 70% of patients treated with monoclonal antibodies and tyrosine kinase inhibitors. The impact on QoL is important and can be very disabling. This appears progressively at the beginning of treatment [2,5,8]. Its appearance is considered as a marker of efficacy of the treatment, and it disappears 4 weeks after the end of treatment, although it may leave sequelae such as postinflammatory hyperpigmentation, telangiectasias, and erythema.
Cosmetic Camouflage in Vitiligo
Published in Vineet Relhan, Vijay Kumar Garg, Sneha Ghunawat, Khushbu Mahajan, Comprehensive Textbook on Vitiligo, 2020
Feroze Kaliyadan, Karalikkattil T. Ashique, Ambika Kumar
There are four basic foundation formulations [3,12,14]: Oil-based: These are water-in-oil emulsions with the pigment held within the oil. They are best suited for dry skin and for skin that requires considerable coverage. The water evaporates from the foundation after application, leaving the pigment in the oily base.Water-based: These are oil-in-water preparations and are suitable for dry to normal skin. They are less stable compared to oil-based preparations but tend to be more popular.Oil-free: These replace the oil with non-comedogenic ingredients like dimethicone or cyclomethicone; they provide a “dry feel” to oily skin.Water-free: Comprised of oils, alcohols, and artificial esters and are waterproof; they contain combinations of titanium dioxide with iron oxide, sometimes combined with ultramarine blue. These are suited for patients requiring intensive facial camouflage [15].
Clinical utility of marketing terms used for over-the-counter dermatologic products
Published in Journal of Dermatological Treatment, 2018
‘Non-comedogenic’ is a marketing term that implies that the cosmetic product will not block pores in acne-prone individuals. Similarly, the term ‘oil free’ implies that the product does not contain mineral or vegetable oil, two common comedogenic ingredients in moisturizing products (18). Instead, ‘oil-free’ products often contain dimethicone or glycerin, which are silicone derivatives. These products do not feel greasy and provide emollient properties. However, even ‘oil-free’ products often contain comedogenic ingredients, such as petrolatum, lanolin, and mineral oil (19).