Wear sun-tan lotion with a high protection factor, and a hat.

使用防晒系数高的水溶性防晒霜，戴上帽子。

Regardless of the type of sunscreen, all are subjected to testing to determine their sunburn protection factor, or SPF.

不论是哪种防晒霜型态，所有的防护产品都需要经由测试来决定能防止晒伤的防晒系数，就是我们常见的 SPF。

They were advice is to use lotion with the highest sun protection factor. SPF, possible.

他们建议使用防晒系数最高的乳液。防晒指数，成为可能。

It stands for sun protection factor, and based on that name, it seems like it should tell you how well you'll be protected from the sun.

它代表防晒指数，这个名字好像是告诉你产品的防晒效果如何。