Are there artificial colors, flavors or sweeteners in OLLY Bars? OLLY October 25, 2019 14:42 Updated Follow No, we only use colors, flavors and sweeteners derived from natural sources. Related articles Is OLLY protein powder vegan? Is this product vegetarian? Are OLLY Bars free of major allergens? What type of protein in used in OLLY protein powder? Are OLLY Plant Powdered Protein powders NON-GMO? Comments 0 comments Article is closed for comments.