Skincare line can vary depending on individual preferences, skin types, and concerns. There are many reputable skincare brands known for their quality products. Here are some well-regarded skincare lines as of my last knowledge update in September 2021:

1. La Mer: Known for its luxury skincare products, La Mer is famous for its Crème de la Mer moisturizer.

2. Estée Lauder: Offers a wide range of skincare products, including the popular Advanced Night Repair serum.

3. Clinique: Known for its dermatologist-developed products, Clinique offers a variety of skincare solutions for different skin types. The Dramatically Different Moisturizing Lotion being a fan favorite. 

4. Kiehl’s: A brand with a long history of providing effective skincare solutions, including their Midnight Recovery Concentrate.

5. COSRX: Renowned for clean, effective skincare products free of harmful ingredients that help alleviate irritated skin. The Glass skin starter set is the perfect gift. 

6. Sunday Riley: Offers high-quality products known for their efficacy, such as Luna Sleeping Night Oil.

7. The Ordinary: A budget-friendly brand known for its straightforward and affordable yet effective skincare products. The Facial Treatment Set is a great place to start.

8. CeraVe: The Hydrating Facial Cleanser, recommended by dermatologists, focuses on gently cleansing skin while hydrating and removing all dirt, makeup, and excess oils.

9. Paula’s Choice: Known for its research-driven approach to skincare and effective exfoliants. That’s why so many people love the 2% BHA Liquid Salicyclic Acid Exfoliant.

10. Murad: Offers a variety of skincare products designed to address specific skin concerns such as the Rapid Dark Spot Correcting Serum.

Remember that what works best for you may vary depending on your skin type, concerns, and personal preferences. It’s essential to understand your skin’s needs and consult with a dermatologist if you have specific skincare concerns. Additionally, as the skincare industry is constantly evolving, new brands and products are always, so it’s a good idea to look for updated reviews and recommendations.