Recent in In vivo (page 1 of 4)
Jul 20, 2015
To work against sagging and aging, Lipotec performed a new in vivo test on Uplevity peptide.
Jul 15, 2015
The Antarcticine marine ingredient is Lipotec’s latest in vivo study, which proved its efficacy to fight cold weather and wrinkles.
Apr 23, 2014 | Paul Cornwell, PhD, and Jeremy Goodwin, PhD, Z Cussons (UK) Ltd.
This article reviews the mechanisms underlying skin irritation and sensitization, and methods used in a case study to test cosmetic products for their potential to cause irritation. It also covers the main skin conditions that can influence susceptibility to irritation, as well as ingredients affecting the mildness of cosmetic products.
Apr 23, 2014 | Hongbo Zhai, MD, and Howard I. Maibach, MD, University of California School of Medicine
The current preliminary study compared the sensitivity and correlation of open chamber device and closed chamber device on a tape stripping human model. The amount of SC removed by tape stripping was also quantified with a protein assay method.
Apr 23, 2014 | Hongbo Zhai, MD; Howard I. Maibach, MD; and Heidi P. Chan, MD; University of California San Franciso, Department of Dermatology
While scalp irritation also can be caused by contact with physical or biological agents, this column will discuss the irritation resulting from hair chemicals. The desire for a specific hairstyle or color can render the scalp exposed to different hair chemicals that may result to scalp irritation.
Apr 23, 2014
Researchers from the Drexel University College of Medicine have established a clearer relationship between Staphylococci bacteria and the conditions atopic dermatitis (AD) and eczema.
Apr 23, 2014 | Hongbo Zhai, MD, and Howard I. Maibach, MD, University of California at San Francisco School of Medicine
Described here was an in vivo model to determine antioxidative capacity of a topical skin care emulsion versus the emulsion’s vehicle on human skin that was exposed to UVR. Results suggest the test emulsion and its vehicle control inhibited the induction of erythema and reduced inflammation caused by the UV exposure.
Apr 23, 2014 | Howard I. Maibach, MD, University of California School of Medicine; and Nicolas Atrux-Tallau, PhD, ESPCI ParisTech
Glycerol is one humectant commonly employed due to its high hygroscopic and hyperosmotic properties. It is used in cosmetics as a moisturizer and in pharmaceutical formulations as an active compound. Being naturally present in the skin, glycerol was quickly identified for its role in skin hydration, similar to natural moisturizing factors (NMF).
Apr 23, 2014 | Wolf Eisfeld and Rolf Wachter, Cognis Deutschland GmbH & Co. KG, Florian Schaefer and Wolfram Boucsein, Institute for Physiological Psychology, University of Wuppertal
Pulse volume amplitude, skin conductivity, facial muscle activity and other psycho-physiological parameters can give an objective emotional assessment of consumer response to personal care products, enabling substantiation of claims for wellness effects, as demonstrated here in the setting of cosmetics and fabric care.
Jan 6, 2014 | Phil Cummins, PhD, Estée Lauder
To monitor or anticipate what can happen in the creation of a cosmetic product when components are combined and as time passes is no trivial task especially when compounded with the psychophysical needs for the product to fit a specific concept and to spread, feel, pour and appear elegant.
Nov 12, 2013
The need for a conceptual approach to skin aging, the need to combine in vitro and in vivo findings and the new direction for cosmetic ingredient manufacturers are discussed here.
Jul 15, 2013 | K. Bazela, PhD; R. Debowska, PhD; B. Tyszczuk; K. Rogiewicz, PhD; and I. Eris, PhD, Dr. Irena Eris Cosmetic Laboratories; R. Mlosek, PhD, Medical University of Warsaw; and A. Nowicki, PhD, Institute of Fundamental Technological Research
Although cellulite is not considered a disease, it is a significant cosmetic problem for many post-adolescent women. Recent studies using new diagnostic techniques such as ultrasound imaging can define the cellulite-reducing efficacy of cosmetics. However, there is still a need to standardize and objectify the testing procedures and to find parameters to measure anti-cellulite efficacy.