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register hereIntroduction: Numerous factors influence hair health, including genetic predisposition, hormonal changes, stress, nutritional deficiencies, medical conditions, or medications. With the rising interest in maintaining hair health, alternative approaches such as functional cosmetics and food products are gaining attention.

简介：影响头发健康的因素很多，包括遗传易感性，激素变化，压力，营养缺乏，医疗状况或药物治疗。随着人们对保持头发健康的兴趣日益浓厚，功能性化妆品和食品等替代方法正受到关注。

Probiotics, health-beneficial live microorganisms, are emerging as potential candidates for improving hair health. Therefore, this study aimed to evaluate the effects and safety of oral intake of Latilactobacillus curvatus LB-P9 on hair health.The study was a randomized, double-blind, placebo-controlled clinical trial involving participants (aged 18-60 years old) with mild to moderate hair damage.

益生菌是一种有益健康的活微生物，正在成为改善头发健康的潜在候选者。。这项研究是一项随机、双盲、安慰剂对照的临床试验，参与者（年龄18-60岁）患有轻度至中度头发损伤。

Participants were randomly assigned to the test (receiving LB-P9 supplements) or control (receiving a placebo) groups, respectively. Efficacy was assessed using measures such as hair luster, elasticity, and participant satisfaction. Safety evaluations comprised physical examinations, vital sign measurements, laboratory tests, and observation of adverse reactions.Results: Overall, 80 participants were enrolled in the trial.

参与者被随机分配到测试组（接受LB-P9补充剂）或对照组（接受安慰剂）。使用头发光泽，弹性和参与者满意度等指标评估疗效。安全性评估包括体格检查，生命体征测量，实验室检查和不良反应观察。结果：总体而言，80名参与者参加了试验。

Significant improvements were observed in hair luster, elasticity, and participant satisfaction in the test group compared to the control group. In the test group, the hair luster parameter increased by 1.65±2.30 (LBNT) at 24 weeks (p<0.001), indicating a 19% improvement over the control group. Subgroup analysis revealed significant improvement in hair luster among females with short hair.

与对照组相比，测试组的头发光泽，弹性和参与者满意度显着改善。在试验组中，头发光泽参数在24周时增加了1.65±2.30（LBNT）（p<0.001），表明比对照组改善了19%。亚组分析显示，短发女性的头发光泽显着改善。

Additionally, hair tensile strength, reflecting hair elasticity and participant satisfaction are increased by 10.27±16.40 (gf/mm 2 ) at 24 weeks (p=0.001) in the test group.The subjective indicator of participant satisfaction, which imp.

此外，测试组在24周时（p=0.001），反映头发弹性和参与者满意度的头发拉伸强度增加了10.27±16.40（gf/mm 2）。参与者满意度的主观指标，其影响。