--- source_url: "https://pubmed.ncbi.nlm.nih.gov/38279588/?utm_source=openai" title: Multispectral near-infrared spectroscopy study evaluating the effect of razor design on shaving-induced erythema - PubMed mirrored_at: 2026-08-14T15:38:07.199Z host: pubmed.ncbi.nlm.nih.gov cited_in_42a: true mirror_canonical: "https://index.42a.ai/pubmed.ncbi.nlm.nih.gov/38279588/index__q__utm_source_openai" --- > **Original source:** https://pubmed.ncbi.nlm.nih.gov/38279588/?utm_source=openai ## Multispectral near-infrared spectroscopy study evaluating the effect of razor design on shaving-induced erythema Chris Boodoo et al. Skin Res Technol. 2024 Feb. ## Erratum in - [Correction to "Multispectral Near-Infrared Spectroscopy Study Evaluating the Effect of Razor Design on Shaving-Induced Erythema".](https://pubmed.ncbi.nlm.nih.gov/41423889/) \[No authors listed\] \[No authors listed\] Skin Res Technol. 2025 Dec;31(12):e70314. doi: 10.1111/srt.70314. Skin Res Technol. 2025. PMID: 41423889 Free PMC article. No abstract available. ## Abstract **Background:** While shaving-induced erythema is a common inflammatory skin issue, there is a lack of quantitative information on how well a shaving product performs in this regard. In this study, multispectral near-infrared spectroscopy (NIRS) imaging was used to quantitatively and qualitatively measure the extent of shaving-induced erythema. The research compares a safety razor and a cartridge razor to evaluate their impact on skin irritation. **Materials and methods:** Fifty-nine healthy male volunteers without pre-existing skin conditions were enrolled. Basic demographics were recorded, and participants' faces or necks were imaged before shaving. Shaving was conducted on the right side of the face/neck with the safety razor and on the left side of the face/neck using the 3-blade cartridge razor. Images were captured immediately after shaving, at 5 and 10 min post-shaving. **Results:** Tissue oxygen saturation (StO2) measurements demonstrated that the safety razor induced significantly less erythema than the cartridge razor. Immediately after shaving, 40.3% of skin shaved with the safety razor had erythema compared to 57.6% for the cartridge razor. At 5 min post-shaving, 36.5% of skin shaved with the safety razor had erythema, compared to 53.8% of cartridge razor. **Conclusions:** Multispectral NIRS revealed significant differences in shaving-induced erythema between safety and cartridge razors. Safety razors demonstrated a lower incidence of erythema, suggesting a potential advantage for individuals prone to skin irritation. This study contributes valuable insights into skin irritation and highlights the potential of multispectral NIRS in dermatology research. **Keywords:** dermatology; inflammation; men's grooming; multispectral NIR; non-invasive imaging; razor design; razors; shaving; skin irritation. © 2024 The Authors. Skin Research and Technology published by John Wiley & Sons Ltd. [PubMed Disclaimer](https://pubmed.ncbi.nlm.nih.gov/disclaimer/) ## Conflict of interest statement The authors declare no conflicts of interest. ## Figures **FIGURE 1** Major components of the Mimosa Pro device. **FIGURE 2** Device and smartphone connection ports. **FIGURE 3** StO2 maps of the face of an individual immediately after shaving (Post‐Shave), 5 min after shaving and 10 min after shaving. **FIGURE 4** Relative erythema over time for each razor. ## References 1. 1. Cowley K, Vanoosthuyze K. Insights into shaving and its impact on skin. Br J Dermatol. 2012;166(1):6‐12. doi: 10.1111/j.1365-2133.2011.10783.x - [DOI](https://doi.org/10.1111/j.1365-2133.2011.10783.x) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/22385029/) 2. 1. Maurer M, Rietzler M, Burghardt R, Siebenhaar F. The male beard hair and facial skin—challenges for shaving. Int J Cosmet Sci. 2016;38(1):3‐9. doi: 10.1111/ics.12328 - [DOI](https://doi.org/10.1111/ics.12328) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/27212465/) 3. 1. Evans RL, Bates S, Marriott RE, Arnold DS. The impact of different hair‐removal behaviours on the biophysical and biochemical characteristics of female axillary skin. Int J Cosmet Sci. 2020;42(5):436‐443. doi: 10.1111/ics.12648 - [DOI](https://doi.org/10.1111/ics.12648) - [PMC](https://pmc.ncbi.nlm.nih.gov/articles/PMC7984395/) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/32638392/) 4. 1. Lee D, Kim MJ, Park HJ, et al. Current practices and perceived effectiveness of polynucleotides for treatment of facial erythema by cosmetic physicians. Skin Res Technol. 2023;29(9):e13466. doi: 10.1111/srt.13466 - [DOI](https://doi.org/10.1111/srt.13466) - [PMC](https://pmc.ncbi.nlm.nih.gov/articles/PMC10485387/) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/37753681/) 5. 1. Tao M, Li M, Zhang Y, et al. Objectively quantifying facial erythema in rosacea aided by the ImageJ analysis of VISIA red images. Skin Res Technol. 2023;29(1):e13241. doi: 10.1111/srt.13241 - [DOI](https://doi.org/10.1111/srt.13241) - [PMC](https://pmc.ncbi.nlm.nih.gov/articles/PMC9838746/) - [PubMed](https://pubmed.ncbi.nlm.nih.gov/36426837/) ## LinkOut - more resources - ### Full Text Sources - [Europe PMC](https://europepmc.org/abstract/MED/38279588) - [Ovid Technologies, Inc.](https://www.ovid.com/38279588.pmid) - [PubMed Central](https://pmc.ncbi.nlm.nih.gov/articles/pmid/38279588/) - [Wiley](https://doi.org/10.1111/srt.13598) - ### Miscellaneous - [NCI CPTAC Assay Portal](https://assays.cancer.gov/CPTAC-1744)