1. Amway: 62 years,$8.4 billion (2019), Largest MLM company globally, sells health and beauty products.

2. Herbalife: 41 years, $4.4 billion (2019), Focuses on weight management,

3. Avon: 136 years, $1.2 billion (2019),Known for cosmetics, personal care, and household products.

4.Mary Kay: 58 years, $3.5 billion (2019), Specializes in skincare and cosmetics, predominantly for women.

5. Tupperware: 75 years, $1.9 billion (2019), Famous for kitchen storage and serving products.

6. Nu Skin Enterprises: 37 years, $2.3 billion (2019), Offers skincare and nutritional products.

7. Forever Living Products: 43 years, Not available, Focuses on aloe vera-based wellness and beauty products.

8. Primerica: 45 years, $2.2 billion (2019), Provides financial services, including insurance and investments.

9. Oriflame: 55 years, Not available, Offers cosmetics, skincare, and wellness products.

10. Young Living: 27 years, Not available, Specializes in essential oils and wellness products.

These top 10 MLM companies have established themselves over several decades, offering various products and services ranging from health and beauty to financial and wellness solutions.