Opal, a reviewer, shares her experience with the CAVIAR Bond Repair Shampoo by Alterna void. She received it as a free gift in her last Flip box. Opal mentions that this shampoo gently cleanses damaged hair, and she agrees with the claim. She highlights that her hair feels amazing after using it, and it appears thicker. Opal dyes her hair frequently, which usually leaves it stringy and thin, but this shampoo seems to counteract those effects. She expresses her intention to repurchase it, emphasizing that it is worth the money. The only downside she mentions is the smell, but she mitigates it by using a vegan rice milk spray and a vanilla hair mist. Overall, Opal's review indicates that the CAVIAR Bond Repair Shampoo by Alterna void is effective in cleansing and improving damaged hair, making it a worthwhile product to consider.