PubMed · 858093
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N T McPhedran. 1977. Surgical epilation procedures.. https://pubmed.ncbi.nlm.nih.gov/858093/
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The glass transmission block, a key component of all intense pulsed light (IPL) devices, is responsible for the delivery of IPL energy from the xenon discharge lamp to hair and skin structures during treatment. The purpose of this study was to investigate the variation in temperature of the quartz glass block used in the iPulse (CyDen, Swansea, UK) handset during typical hair removal treatments of Asian and Afro-Caribbean skin types. Initial results from four subjects indicated that the temperature of the glass transmission block did not exceed 45 degrees C during any of the treatments. Furthermore, the development of the temperature measurement methodology described in this paper will enable the comparison of data from different IPL systems to be undertaken in a subsequent larger scale trial.
BACKGROUND: Unwanted hair growth is a therapeutic challenge and considerable resources are spent to achieve a hair-free appearance. Epilation with laser devices (alexandrite, diode, neodymium:YAG, and ruby lasers) and intense pulsed light are commonly used although the long-term effect is uncertain. OBJECTIVES: To assess the effects of epilation with lasers and light sources. SEARCH STRATEGY: We searched the Cochrane Skin Group's Specialised Register in February 2004; MEDLINE (from 1966) and EMBASE (from 1980) in April 2005. We searched reference lists of collected trials and contacted trial authors. SELECTION CRITERIA: Randomised controlled trials of laser or photoepilation. DATA COLLECTION AND ANALYSIS: Primary outcomes were objective reduction in hair counts, adverse effects and subjective reduction in hairiness. Secondary outcomes were participants satisfaction and personal observations such as softer, finer, or paler hairs. Two authors independently extracted data and assessed trial quality. MAIN RESULTS: We included eleven randomised controlled trials involving 444 people, none of which were of high methodological quality. A large number of trials were excluded, mainly because of their non-randomised design. The randomisation procedures were either unclear or inadequate, using coin tossing, alternation, drawing lots or cards, or open tables of random numbers. The interventions and outcomes were too heterogeneous to be entered in a meta-analysis. Most trials examined a short-term effect up to six months after final treatment. There appeared to be a short-term effect of approximately 50% hair reduction with alexandrite and diode lasers up to six months after treatment, whereas little evidence was obtained for an effect of intense pulsed light, neodymium:YAG or ruby lasers. Long-term hair removal was not documented with any treatment. Pain, skin redness, swelling, burned hairs and pigmentary changes were infrequently reported adverse effects. AUTHORS' CONCLUSIONS: Some treatments lead to temporary short-term hair removal. High quality research is needed on the effect of laser and photoepilation.
BACKGROUND: The preparation of people for surgery has traditionally included the routine removal of body hair from the intended surgical wound site. However, there are studies which claim that pre-operative hair removal is deleterious to patients, perhaps by causing surgical site infections (SSIs), and should not be carried out. OBJECTIVES: The primary objective of this review was to determine if routine pre-operative hair removal results in fewer SSIs than not removing hair. SEARCH STRATEGY: The reviewers searched the Cochrane Wounds Group Specialised Register (October 2005), The Cochrane Central Register of Controlled Trials (The Cochrane Library Issue 3, 2005), MEDLINE (1966 to 2005), EMBASE (1980 to 2005), CINAHL (1982 to 2005), and the ZETOC database of conference proceedings (1993 to 2005). We also contacted manufacturers of hair removal products. SELECTION CRITERIA: Randomised controlled trials (RCTs) comparing hair removal with no hair removal, different methods of hair removal, hair removal conducted at different times prior to surgery and hair removal carried out in different settings. DATA COLLECTION AND ANALYSIS: Three authors independently assessed the relevance and quality of each trial. Data was extracted independently by one author and cross checked for accuracy by a second author. MAIN RESULTS: Eleven RCTs were included in this review. Three trials involving 625 people compared hair removal using either depilatory cream or razors with no hair removal and found no statistically significant difference between the groups in terms of surgical site infections. No trials were identified which compared clipping with no hair removal. Three trials involving 3193 people compared shaving with clipping and found that there were statistically significantly more SSIs when people were shaved rather than clipped (RR 2.02, 95%CI 1.21 to 3.36). Seven trials involving 1213 people compared shaving with removing hair using a depilatory cream and found that there were statistically significantly more SSIs when people were shaved than when a cream was used (RR 1.54, 95%CI 1.05 to 2.24). No trials were found that compared clipping with a depilatory cream. One trial compared shaving on the day of surgery with shaving the day before surgery and one trial compared clipping on the day of surgery with clipping the day before surgery; neither trial found a statistically significant difference in the number of SSIs. No trials were found that compared depilatory cream at different times or that compared hair removal in different settings. AUTHORS' CONCLUSIONS: The evidence finds no difference in SSIs among patients who have had hair removed prior to surgery and those who have not. If it is necessary to remove hair then both clipping and depilatory creams results in fewer SSIs than shaving using a razor. There is no difference in SSIs when patients are shaved or clipped one day before surgery or on the day of surgery.