Results 221 to 230 of about 13,295 (270)

Development of niacinamide cosmetic bioadhesive emulgel using QbD approach

International Journal of Cosmetic Science
The aim of the present study was to develop a cosmetic bioadhesive emulgel to incorporate niacinamide (NMD), based on the combination of sodium hyaluronate and carbomer, using the Quality by Design (QbD) approach.
M. S. Magi, R. Guasamucare, C. Giorgi, Y. de Lafuente, M. Palena, M. E. Parente, A. F. Jimenez-Kairuz, A. Ochoa-Andrade   +7 more
semanticscholar   +1 more source

Niacinamide and Acanthosis Nigricans

Archives of Dermatology, 1984
To the Editor.— A side effect of high-dose niacinamide therapy, not mentioned in the October 1983,Archivesarticle entitled "Response of Generalized Granuloma Annulare to High-Dose Niacinamide," 1 is acanthosis nigricans. The following cases, encountered recently, illustrate the potential for a reaction when the association is overlooked.
openaire   +1 more source

Synergistic effects of niacinamide and low pH on melanin synthesis, melanocyte function and hyperpigmentation: In vitro and clinical insights.

International Journal of Cosmetic Science
OBJECTIVE Niacinamide is a well-established ingredient known for reducing hyperpigmentation by inhibiting melanosome transfer from melanocytes to keratinocytes.
T. Hakozaki, T. Laughlin, Wenzhu Zhao, Gang Deng, Jiazhen Wang, Laurie Moulton   +5 more
semanticscholar   +1 more source

Gas-Liquid Chromatography of Niacin and Niacinamide

Journal of Pharmaceutical Sciences, 1968
A procedure has been developed for the qualitative and quantitative determination of niacin and niacinamide by gas-liquid chromatography. Niacin was determined as its ethyl ester (ethyl nicotinate) or as N -ethylnicotinamide. Niacinamide was determined as niacinamide or converted to either ethyl nicotinate or N -ethylnicotinamide. An immobile biphase
A R, Prosser, A J, Sheppard
openaire   +2 more sources

Direct Determination of Niacinamide in Multivitamin Preparations

Journal of Pharmaceutical Sciences, 1961
Abstract A simple method for the direct determination of niacinamide in pharmaceutical preparations is described. The method involves the reaction of niacinamide in potassium dihydrogen phosphate with cyanogen bromide and barbituric acid. The resulting purple color has a maximum absorbance at 550 m μ . Niacin does not interfere in the reaction unless
O, PELLETIER, J A, CAMPBELL
openaire   +2 more sources

Nicotinic acid/niacinamide and the skin

Journal of Cosmetic Dermatology, 2004
SummaryNicotinic acid (also generally known as niacin) and niacinamide (also known as nicotinamide) are similarly effective as a vitamin because they can be converted into each other within the organism. The blanket term vitamin B3 is used for both.Niacinamide is a component of important coenzymes involved in hydrogen transfer.
openaire   +2 more sources

Polarographic assay of niacinamide in pharmaceutical preparations

Journal of Pharmaceutical Sciences, 1969
A rapid polarographic determination of niacinamide pharmaceutical preparations had been developed and is compared with the Konig colorimetric assay using barbituric acid. The niacinamide is extracted from the sample using a combination column and liquid-liquid partition chromatography. The extracted niacinamide is determined in a supporting electrolyte
openaire   +2 more sources

Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing: A Double-blind, Randomised, Placebo-controlled Clinical Study.

Current Medicinal Chemistry
INTRODUCTION Skin ageing is a complex process influenced by various factors. Personal care products claim to address ageing signs, yet clinical efficacy tests lack standardised regulations. Niacinamide (NIA) is known for skin benefits, including managing
Mariane Massufero Vergílio, G. Leonardi
semanticscholar   +1 more source

Niacinamide transport through the blood-brain barrier

Neurochemical Research, 1987
The unidirectional influx of niacinamide across cerebral capillaries, the anatomical locus of the blood-brain barrier, was measured with an in situ rat brain perfusion technique employing [14C]niacinamide. Niacinamide was transported rapidly across the blood-brain barrier by a system that was not saturable with 10 mM niacinamide in the perfusate ...
openaire   +2 more sources

Reactions to niacinamide

Journal of the American Academy of Dermatology, 1981
H S, Zachkeim, D B, Vasily, M L, Westphal, C W, Hastings   +3 more
openaire   +2 more sources