l carnitine supplement uses ProSupps L-Carnitine Liquid 3000, Stimulant-Free Liquid Shots for Men & Women - Clean Workout Drink for Energy, Performance & Muscle Recovery - No Sugar, No Carbs L-Carnitine, 500 mg, 30 vegetarian

Peptide therapy may be appropriate for individuals experiencing fatigue, weight gain, slow recovery, hormonal imbalance, sleep disruption, joint or muscle discomfort, or age-related changes in skin, metabolism, or cognition

So whatever difference there is on the before & after picture, it's really just because of this soap

What should people know

Although the biological role of taurine is not at all clear, some studies suggest that it may be a compound involved in the nervous system, being especially necessary for brain development [8]

Unlike oral supplements, an injection delivers vitamin B12 directly into the body without relying on digestive absorption which can be reduced by age, certain medications such as proton pump inhibitors or metformin, or gastrointestinal conditions

(London, UK: The Royal Society of Chemistry), 11, 151164