--- Replenishment emails are the "secret weapon" of beauty ecommerce. In the hair care sector, where products have predictable usage cycles, artificial intelligence makes it possible to anticipate the exact moment when a customer is running out of their favorite product. ## The "Magic Moment" of Replenishment with AI Unlike traditional automations based on fixed averages (e.g. sending after 30 days), AI analyzes individual behavior: - **Historical purchase frequency:** Does the customer buy every 4 or every 8 weeks? - **Seasonality:** In summer, the use of heat protectants and masks usually increases. - **Product volume:** A 250ml bottle of shampoo does not last the same as a 1 liter one. ### Winning Strategies for 2025 1. **Lifecycle Prediction:** Use Machine Learning algorithms to identify if a customer has long or short hair based on how often they replenish their conditioner. 2. **Subject Personalization:** Subjects that mention the specific benefit ("Ready to maintain your shine?") have 50% more opens than generic ones ("Replenish your product"). 3. **Smart Cross-selling:** If the customer replenishes their shampoo, the AI can suggest a complementary mask for the same hair type (e.g. dry, dyed, or curly). ## Examples of High-Impact Subjects - **Gentle Urgency:** "Your hair will thank you: your [Product] is running out." - **Benefit Focus:** "Don't lose the shine. It's time to renew your treatment." - **VIP Incentive:** "We know you well. Here's 10% off your next [Product] replenishment." ## The Impact on Customer Lifetime Value (CLTV) Implementing replenishment sequences optimized with AI can increase customer lifetime value by up to 25%. By eliminating friction from the purchasing process and reminding the user of their need just before it arises, you build unbreakable brand loyalty. *Pro Tip:* Don't just send one. Set up a 3-step sequence: the initial reminder, a follow-up with a discount, and a final notice before the cycle closes completely.