摘要:

SynopsisThe function of the stratum corneum is dependent on the functions of its constituent parts. This paper focusses on corneocyte dimensions and the implications of change in dimension for function. A technique in which it is possible to obtain a value for corneocyte thickness is described. The changes in corneocyte dimensions with age and site and after topical applications are documented.Techniques which measure the rate of desquamation are also described. The rate of passive corneocyte loss has been estimated by counting the numbers of corneocytes shed into chambers fixed to the skin surface. In addition the corneocyte loss after a standardized rotational stimulus to the skin surface has been measured. Scanning and transmission electron microscope examination of corneocytes obtained by a scrub procedure is also described. A preliminary report on an immunological approach to the study of the biochemistry of corneocytes and stratum corneum is also included.Etude de cornéocytes isol

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1981.tb00289.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

SynopsisThe occurence of mercury‐resistant pseudomonads in a seemingly well‐preserved toiletry formulation is reported.Microorganisms identified as presumptivePseudomonas aeruginosahave been isolated from awater‐in‐oilemulsion despite the inclusion of 0.007%phenylmercuric acetate(PMA) as preservative and also from an emulsion containing 0.002% PMA. Pseudomonads were capable of surviving in these emulsions for up to 3 and 12 months respectively. Culture studies confirmed that the isolates were initially resistant to maximum levels of PMA permitted in shampoos and hair creams according to EEC regulations.Microbial resistanceof this nature emphasises the importance of strict attention to plant hygiene and good manufacturing practice.Présence de pseudomonas résistants au mercure dans les émulsions dont le conservateur est l'acétate de ph

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1981.tb00290.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

SynopsisA method of determining qualitatively and quantitatively chlorobutanol in cosmetic products by means of an electron capture detector is described. Simple dilution procedure with a solvent containing an internal standard is used.Dosage du chlorobutanol dans les produits cosmétiques par chromatographie en phase gazeus

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1981.tb00291.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

SynopsisThe self‐diffusion of salicylic acid has been monitored radiochemically through pigskins (whole and dermal) and human skins (whole, dermal and epidermal).The effects of pH, temperature and changing dimethyl formamide (DMF) concentration on the penetration of salicylic acid through the various skin membranes have been evaluated.Conclusions have been drawn as to the mechanisms operating and some comparisons to zeolite/polystyrene membranes have been made.Quelques aspects de la perméabilite cuta

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1981.tb00292.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1981.tb00293.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

ISSN:0142-5463    

DOI:10.1111/j.1467-2494.1981.tb00294.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY