[This review was collected as part of a promotion.] The bristles are soft but also firm enough that they should hold their shape for a good time. They are extra thin bristles but are dense enough to give them a good structure. I have sensitive gums that are prone to recession and the bristles feel very nice on them. Especially when it is on the "gum care" setting. That is the gentlest setting and the one I like using the most. The "clean" setting is more vigorous, and the "white" setting is more vigorous than that. The toothpaste foams nicely on the brush head and it contours around teeth, top to bottom, perfectly.

[This review was collected as part of a promotion.] These super soft brush heads are the best! I love how it gently moves over my teeth and gums yet everything feels clean when I'm done! I was skeptical because they were so soft but it makes ot easier to move the brush around nor having to be zinged by sharp bristles.

[This review was collected as part of a promotion.] I like this toothbrush a lot. I also like the sensitive brush head. I sometimes experience gum sensitivity and I had no problems while using this so far. I have not had to charge it yet so it has a good charge.

[This review was collected as part of a promotion.] I’m really happy with these brush heads. They’re soft and gentle without sacrificing the clean feel and look of my teeth after brushing. I haven’t felt any sensitivity of my teeth after using it for the last two weeks.

[This review was collected as part of a promotion.] The Sonicare s2 sensitive brush head is really good for those with more sensitive mouths. Its extra thin bristles are gentler on your mouth and there are 3 different settjngs on the brush as well so you can choose the setting for guns which helps.

[This review was collected as part of a promotion.] I've been using the Sonicare S2 Sensitive brush head for about 2wks now; having switched from a manual tooth brush, and I admit I am impressed. For a manual brush, I use soft bristles and brush for 3mins. This, combined with flossing and fluoride free toothpaste, has always left my teeth feeling clean and prevented the build up of plaque; my dentist has expressed approval over my level of dental care. With the Sonicare S2 Sensitive brush head, I have noticed that my teeth feel clean after brushing AND throughout the day; even between meals. I was incredibly surprised at this, but find that my perspective towards electric toothbrushes to have changed from highly suspicious to appreciative. There are a couple things that keep me from giving this brush 5 stars. 1: the bristles already seem to have worn down enough that if I don't use the medium speed at night (originally I was using the lowest speed), my teeth don't feel quite as clean in the morning (before brushing or eating) or through-out the day. 2: I with the bristle head was a tiny bit indented in the center, and the bristles were slightly angled, so that my teeth were more cupped and angled bristles reached tighter spots more readily. 3: I wish the brush head was a little larger. 4: The brush is too soft to be used for cleaning my tongue.

[This review was collected as part of a promotion.] I am new to using a Sonicare product and I have to say that I truly love it. The brush system and bristle attachment have kept my teeth feeling fresh and clean better than a manual brush ever could. I use mine twice a day and the plaque buildup that I normally have to deal with has been kept at bay, which is awesome! My gums feel rejuvenated as well. I would highly recommend this great product to everyone.

[This review was collected as part of a promotion.] This is my first time using a Philips Sonicare S2 Sensitive brush head attaches easily to the handle, there is a little space where it connects but it doesn't seem to affect the function. The bristles are soft and cleans my teeth without causing pain. The bristle area itself seems a little short but it does reach between teeth spaces and to my gum lines affectively.

[This review was collected as part of a promotion.] Philips Sonicare S2 Sensitive brush head is simply a great toothbrush to get your teeth clean. The bristles of these brush heads are so soft and gentle, but big as they clean my teeth so well. I have a receding gum line and this brush head is so gentle on my gums, but yet cleans so well. The brush head is also small enough to reach the back of mouth to get those hard to reach places. I have a small mouth and using Philips Sonicare S2 Sensitive brush head can get those places a normal toothbrush can not. I would highly recommend this product!

[This review was collected as part of a promotion.] The bristles were too soft to clean difficult tarter on inside back molars. The bristles were great for the rest of my teeth. I like that there are a bunch of bristles that are very small. Very gentle in gums so that is nice.