After researching, here are some of the best lip liners for mature lips, along with their product details, positive and negative aspects, and ingredients or materials:

1. Sephora Crayon Contour Des Lévres Lip Liner: This lip liner is creamy, long-lasting, and waterproof, with natural oils that provide all-day hydration and super emollients that provide a creamy texture that swipes effortlessly onto lips. It is free of parabens, formaldehyde-releasing agents, sulfates SLS & SLES, and triclosan. Positive aspects include its hydrating and long-wearing benefits, while negative aspects include its high price point of $22.00.

2. Sisley Paris Phyto-Lèvres Perfect Lip Pencil: This lip pencil has a gel formula that helps it glide over lips and easily create the desired shape. It can be used as a liner or as a lipstick, and it is free of parabens and mineral oil. Positive aspects include its gel formula and versatility, while negative aspects include its high price point of $57.00.

3. DuWop Reverse Lip Liner: This colorless lip liner helps keep lipstick from "creeping" and is recommended for mature lips. Positive aspects include its effectiveness in preventing feathering and bleeding, while negative aspects include the fact that it is colorless and may not provide the desired definition.

4. Urban Decay 24/7 Glide-On Lip Pencil: This lip liner contains skin-loving ingredients such as vitamin E, jojoba oil, and cottonseed oil that moisturize and nourish lips while also providing color. It is long-lasting and waterproof. Positive aspects include its moisturizing benefits and long-lasting wear, while negative aspects include its high price point of $22.00.

5. Maybelline Color Sensational Shaping Lip Liner: This lip liner has an anti-smudge and anti-smear formula that is designed to give the perfect pout. It is also affordable. Positive aspects include its affordability and anti-smudge formula, while negative aspects include its limited shade range.

6. LOreal Paris Age Perfect Anti-Feathering Lip Liner: This lip liner is formulated to shape and define lips and prevent feathering. Positive aspects include its effectiveness in preventing feathering and its affordable price point, while negative aspects include its limited shade range.

In summary, the best lip liners for mature lips include those that are hydrating, long-wearing, and prevent feathering or bleeding. Some recommended ingredients include natural oils, super emollients, and skin-loving ingredients such as vitamin E and jojoba oil. However, the choice ultimately depends on personal preference and skin type.