For private products like Clearasil, Spanx, etc. Facebook and Twitter icons being present suppresses purchase intentions by 25%
School of Business Study Finds that Facebook and Twitter Symbols Subconsciously Influence Online Buying Decisions : University of Miami School of Business
Social icons on e-commerce sites make shoppers 25% more likely to buy products that are desirable to consume in public (sportswear, fragrance) and 25% less likely to buy products that are undesirable (acne products)
School of Business Study Finds that Facebook and Twitter Symbols Subconsciously Influence Online Buying Decisions : University of Miami School of Business