PROBLEM TO BE SOLVED: To provide an antiseptic aqueous solution in which amino acids are formulated in a high formulation ratio, excellent in antiseptic property, especially storage effectiveness to fungi and safety, free from problems such as deposition, discoloring and odorization even in long-term storage, excellent in storage stability and imparting effects free from tackiness feeling while giving high moisture-retaining effect, by the formulation with a cosmetic and preventing the color fading of dyed hair.SOLUTION: The antiseptic aqueous solution comprises (A) a pyrrolidone carboxylic acid and/or its salt, (B) a basic amino acid and/or its salt, (C) an acidic amino acid and/or its salt, (D) a neutral amino acid and/or its salt and (E) lactic acid and/or its salt, in a specific formulation ratio and is a specific pH range.COPYRIGHT: (C)2009,JPO&INPIT【課題】防腐性、特に真菌に対する保存効力、安全性に優れ、長期保存でも析出、着色、着臭などの問題がない、保存安定性に優れ、化粧料に配合することによって高い保湿効果を付与しながらべたつき感がなく、染色毛の色落ち防止といった効果を付与することが可能なアミノ酸類高配合防腐水溶液を提供する。【解決手段】(成分A)ピロリドンカルボン酸及び/またはその塩と、(成分B)塩基性アミノ酸及び/またはその塩と、(成分C)酸性アミノ酸及び/またはその塩と、(成分D)中性アミノ酸及び/またはその塩と、(成分E)乳酸及び/またはその塩を、特定の配合比かつpHで含有する。【選択図】なし
