ArticleSkin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)
Effects of Stimulus Temperature and Skin Hydration Levels on Wetness Perception at the Underarm.
Article in Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
backgroundExperiencing wetness on the skin because of sweating or contact with fluids can induce thermal discomfort. Millions of people apply antiperspirant deodorant products to the underarm to minimise this negative experience. However, the mechanisms underpinning wetness perception at the underarm and the influence of underlying stratum corneum hydration remain under investigation. We aimed to evaluate the role of stimulus temperature and skin hydration levels on wetness perception at the underarm in young participants. MATERIALS AND
methodsTen healthy participants (5 M/5 F; 29 ± 7 years) underwent a quantitative sensory test during which they reported the perceived magnitude of wetness perception from a short-duration static application of a cold-wet (i.e., 5°C below local skin temperature), neutral-wet (i.e., equal to local skin temperature) and warm-wet (i.e., 5°C above local skin temperature) stimuli. Wetness perception was assessed on a 100-mm visual analogue scale (0 = dry; 100 = completely wet), with a repeated measures design exploring the effects of overhydration (+21 %) and dehydration (-40 %) of the underarm's skin.
resultsOur results indicated a higher wetness perception (p = 0.012) during the cold-wet (40 mm, 95 % CI: 25, 56) than during the warm-wet (25 mm, 95 % CI: 12, 39), and neutral-wet stimuli (24 mm, 95 % CI: 7, 40). Furthermore, overhydration of the underarm' stratum corneum can lead to an increase in wetness perceptions upon contact with cold-wet stimuli only (mean increase: 20 mm, 95 % CI: 3, 36; p = 0.024; corresponding to 20 % increase).
conclusionOur findings provide novel fundamental insights into the underarm's perceptual responses to wetness, which could inform understanding of the determinants of wet feel associated with periods of sweating and the application of antiperspirant products.
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