Below you will find our recommended order intervals for our products Light Emulsion, Rich Emulsion, Derma Emulsion & Intense Emulsion The recommended order interval is 4 to 6 weeks if you apply 2-3 pumps morning and evening. Mineral Cleanser & Sensitive Cleanser The recommended order interval is 12 to 16 weeks if you apply 2-3 pumps in the evening only. Probiotic Concentrate, Azelaic Concentrate, Night Active Retinol & Night Active Control Recommended order interval is 8 to 16 weeks if you apply 1 pump mixed with moisturizer only in the evening. Rich Body Cream Recommended order interval is 4 to 12 weeks depending on how often and where you apply the product. Rich Body Cream lasts about 6 weeks if you use 6 pumps daily. Five Point Cleanser Recommended order interval is 4 to 12 weeks depending on how often and where you apply the product. Five Point Cleanser lasts about 6 weeks if you use 4 pumps daily. Sun Emulsion SPF 50+ & Sun Emulsion SPF 30 The recommended order interval is 4 to 6 weeks depending on the planned use. Sun Emulsion Body SPF 50+ & Sun Emulsion Body SPF 30 The recommended order interval is 4 to 8 weeks depending on the planned use.