Non invasive measurement of skin hydration and transepidermal water loss in normal skin

Abstract The purpose of this study was to evaluate transepidermal water loss, skin hydration and skin pH in normal ponies. Sixteen ponies of both sexes were examined in the study. Measurements were taken from seven different sites: the neck region, the shoulder, thorax, lumbar, inguinal, lip region and the auricle. In each of the regions transepidermal water loss (TEWL), skin hydration and skin pH were measured. For transepidermal water loss, the lowest values were observed in the lumbar region (9.71g/hm2), while the highest values were observed in the lip region (22.35 g/hm2). In the case of skin hydration the lowest values were observed for the thorax region (2.13 CU), and the highest for the lip region (41.81 CU). For skin pH, the lowest results were obtained in the lumbar region (6.93), and the highest in the lip region (7.96).

Download Full-text

Collagen Hydrolysate Prepared from Chicken By-Product as a Functional Polymer in Cosmetic Formulation

Molecules ◽

10.3390/molecules26072021 ◽

2021 ◽

Vol 26 (7) ◽

pp. 2021

Author(s):

Aneta Prokopová ◽

Jana Pavlačková ◽

Pavel Mokrejš ◽

Robert Gál

Keyword(s):

Water Loss ◽

Transepidermal Water Loss ◽

Skin Hydration ◽

Skin Elasticity ◽

Cosmetic Products ◽

Collagen Hydrolysate ◽

Carbopol Gel ◽

Cosmetic Formulation ◽

The Right ◽

Positive Effect

Chicken stomachs can be processed into collagen hydrolysate usable in cosmetic products. The aim of the study was to verify the effects of a carbopol gel formulation enriched with 1.0% (w/w) chicken hydrolysate on the properties of the skin in the periorbital area after regular application twice a day for eight weeks in volunteers ageed 50 ± 9 years. Skin hydration, transepidermal water loss (TEWL), skin elasticity and skin relief were evaluated. Overall, skin hydration increased by 11.82% and 9.45%, TEWL decreased by 25.70% and 17.80% (always reported for the right and left area). Generally, there was an increase in skin elasticity, a decrease in skin roughness, as the resonance times decreased by 85%. The average reduction of wrinkles was 35.40% on the right and 41.20% on the left. For all results, it can be seen that the longer the cosmetic gel formulation is applied, the better the results. Due to the positive effect on the quality and functionality of the skin, it is possible to apply the cosmetic gel formulation in the periorbital area. The advantage of the product with chicken collagen hydrolysate is also the biocompatibility with the skin and the biodegradability of the formulation.

Download Full-text

The beneficial effect of Cannabis Sativa seed oil on the epidermis

Current Cosmetic Science ◽

10.2174/2666779701666210408111006 ◽

2021 ◽

Vol 01 ◽

Author(s):

Anna Olejnik ◽

Aleksandra Galarda ◽

Joanna Goscianska

Keyword(s):

Water Loss ◽

Seed Oil ◽

Unsaturated Fatty Acids ◽

Cannabis Sativa ◽

Transepidermal Water Loss ◽

Skin Condition ◽

Moisture Loss ◽

Non Invasive ◽

Oil Formulation

Background: Cannabis Sativa seed oil has become more and more popular in cosmetic industry mainly due to the high content of antioxidants and unsaturated fatty acids that are desirable in formulations because they prevent moisture loss and reduce the occurrence of dry skin. Objective: The aim of this study was to determine the effect of Cannabis Sativa seed oil on skin parameters such as hydration and transepidermal water loss. Methods: The in vivo tests on volunteers with combination skin were performed by using non-invasive methods by using corneometer and tewameter. Results: The obtained results proved that Cannabis Sativa seed oil improved skin condition. The transepidermal water loss decreased because the lipophilic components of the oil formulation tend to form an occlusive layer on the epidermis surface. The highest increase in skin hydration was observed after one week of treatment. Conclusion: These results confirmed that Cannabis Sativa seed oil has strong moisturizing properties and can be recommended as a natural based skin conditioning agent.

Download Full-text