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? What type of protein in used in OLLY protein powder? Is this product vegetarian? Are OLLY Bars free of major allergens? Can I mix OLLY Protein Powders with other liquids besides water? Comments 0 comments Article is closed for comments.