Should investors follow Olaplex's executive chairman and consider buying shares of their own? Shares of prestige hair care company Olaplex (OLPX 0.83%) have risen 16% this week as of 12:30 p.m. ET on Friday, according to data provided by S&P Global Market Intelligence. Since reporting respectable earnings on Aug. 6, the company's shares have spiked 32%. The primary catalyst for the company's run-up in share price this week seems to be tied to an announcement on Wednesday that executive chairman John Bilbrey ...