Plant extract that contains salicin, a substance that when taken orally is converted by the digestive process to salicylic acid (beta hydroxy acid). The process of converting the salicin in willow bark into salicylic acid requires the presence of enzymes, and is complex. Further, salicin, much like salicylic acid, is stable only under acidic conditions. The likelihood that willow bark in the tiny amount used in cosmetics can mimic the effect of salicylic acid is at best questionable, and in all likelihood impossible. However, willow bark may indeed have some anti-inflammatory benefits for skin because, in this form, it appears to retain its aspirin-like composition. 
*No promo code required; discount will be automatically applied to retail value of the highest-priced single item in cart. Offer cannot be applied to previous purchases or combined with other discounts. Applies to in-stock items only; no rain checks. Offer expires 9pm PT, February 16, 2016. Paula’s Choice reserves the right to modify this offer at any time.
**Promotion expires 9pm PT, February 16, 2016. No cash value. Applies to US and Canada only.
***Promotion expires 9pm PT, February 16, 2016. Choose any 3 from 44 available FREE individual sample packettes on orders of $5+.
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