Unverified80% confidenceTradeoffTime unknown
防晒指数越高，配方中防晒剂浓度或叠加化学防晒剂概率越高，物理防晒做到SPF50通常泛白严重、质地厚重难涂抹；婴儿选SPF30左右是安全性与实用性的平衡点
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Unverified物理防晒SPF越高、氧化锌浓度越大，泛白和厚重感越明显；婴幼儿脸部要兼顾易涂抹，日常可选氧化锌浓度较低的SPF30配方，强晒场景才用高浓度SPF5088% similarUnverifiedSPF值越高防护越强但肤感越厚重、致敏概率越高；SPF30已能阻挡约97%的UVB，SPF50约98%，从30到50提升有限，日常没必要盲目追高84% similarUnverified婴儿防晒霜SPF选30即可，不必追求SPF50+，SPF30已能阻挡约97%的UVB，且高SPF往往意味更高浓度成分和更厚白膜；关键是选带'广谱/Broad Spectrum'标识（同时防UVA和UVB）83% similarUnverifiedSPF值越高通常需要越高浓度防晒剂，质地越厚重油腻、颜色可能偏白，追求轻薄透明口感与追求SPF50高倍防护难以兼得83% similarUnverified防晒霜防护力越高（SPF50+化学防晒剂浓度高）通常肤感越油腻厚重，纯物理防晒易泛白假白；追求清爽肤感与高倍防护难两全，油皮可选控油型化学防晒83% similar
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