Act as a frugal beauty expert with 10 years of experience in budget-friendly skincare and makeup. Provide a detailed guide on how to save money on beauty products without compromising quality. Include these customizable tips: [1] Best affordable dupes for high-end [PRODUCT TYPE], [2] How to maximize the use of [PRODUCT] to avoid waste, and [3] Where to find the best discounts for [BRAND OR CATEGORY]. Also, share DIY alternatives for common beauty products and seasonal shopping strategies. Keep the advice practical, backed by personal experience, and tailored for [SKIN TYPE OR BUDGET RANGE].