原文： Serum and gel is basically the same thing. I purchased both, and just received them. They both say 100% silicone on the packaging). The ingredients on the serum says Polysiloxanes (Silicone), and the ingredients on the gel say Polysiloxanes Silicone dioxide. I'm assuming that silicone dioxide is jus
t a longer name for silicone. The "differences" between the two products are for one, the weight. The serum has 0.2 FL oz (at $17), and the gel has 0.69 FL oz (at $33). Also the serum is thinner, and has a different container (see pictures). The serum has what they call "gentle massaging rollers", but the three little metal balls don't really roll, they are stationary, and you just click the end of the dispenser, and the serum pushes up around the balls, and you apply it to the scar. I like the gel better (which comes in a tube), because you can control the amount you squeeze out, and it's not as drippy/wet, so it absorbs/rubs in to the skin faster. See pictures for differences (the serum is on the index finger, and you can see how it's dripping, and the finger below has the gel, and is not dripping). If I re purchase, I will opt for only the gel, because you get more for your money, and the serum applicator is more inconvenient than convenient.
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译文： Serum和gel功能基本相同。我两个都买了，刚收到快递。包装均显示100％ Silicone ，serum的成分是聚硅氧烷（硅树脂），gel的成分是聚硅氧烷、二氧化硅。我猜“silicone dioxide”与“silicone”同义，只不过前者名字较长。两种产品之间的区别应该就只是重量吧。Serum约为5.5毫升（售价为17美元），gel约为20毫升（售价为33美元）。Serum质地较稀薄，包装容器与gel不同（如图所示）。Serum有“温柔的按摩滚轮”，但是三个小金属球不会真的滚动，它们是静止的，你只需点击分配器的末端，血清就推到球周围，你就可以用到疤痕上。我更喜欢gel（它的包装是管子），因为你可以控制你挤出的量，它不会很湿，所以能更快地被皮肤吸收。可以看下图的差异（食指上的是Serum，手指下是没有在滴的gel）。如果能重新购买，我只会选择gel，因为gel的量更多，而且Serum涂抹器太不方便了。
