Tested on animals:No
This lightweight, fragrance-free lotion is medicated with 10% benzoyl peroxide. Although it does kill acne-causing bacteria, this relatively high concentration of benzoyl peroxide can be needlessly drying. Research has shown that there is little benefit, and potentially negative results, from using a 10% concentration of benzoyl peroxide.
Most people with acne will find their blemishes respond best to topical disinfectants with 2.5%–5% benzoyl peroxide. If these amounts don’t help, your next step should be to speak with your physician about a prescription topical product, which may be necessary anyway if your acne is truly severe.
In terms of redness control, assuming your skin can tolerate 10% benzoyl peroxide (an amount more likely to be sensitizing, leading to more redness), this product contains some notable anti-irritants, which is to your skin’s benefit.
Last, as for the claim of this being "prescription-strength", it isn't, at least not in the sense of that description meaning a superior form of benzoyl peroxide. Whether prescribed or purchased over-the-counter, benzoyl peroxide is a tightly regulated drug. The only advantage to prescription forms is that they're usually combined with a topical antibiotic for enhanced efficacy, but that’s not the case here.
Note: The inactive ingredients for this product are listed in alphabetical rather than descending order. This is permissible because the product is regulated as an over-the-counter drug. Although many companies selling OTC skin-care products have begun listing their ingredients in this manner, it doesn't make it any easier for the consumer to determine how much of a given ingredient they’re applying to their skin.