Key Ingredients: Vitamin C (tetrahexyldecyl ascorbate, 3-O-ethyl ascorbic acid, ascorbyl glucoside, magnesium ascorbyl phosphate, sodium ascorbyl phosphate), tranexamic acid (, guava extract, guava seed oil, ferulic acid | Who It's For: All skin types | Fragrance-Free: Yes Best Retinol Alternative: Paula's Choice Clinical Discoloration Repair Serum Why It's Worth It: Retinol is one of the crown jewels of skin care, but if you have sensitive skin, you might find that this active ingredient is too harsh
Testing is widely available, 5,8 but expensive, and multiple conditions may falsely elevate serum homocysteine and methylmalonic acid levels (Table 3)
Nigam 2018
Being able to return to previously limited activities often matters more than achieving a completely pain-free state
For more information about DHEA, please see Life Extensions DHEA Restoration Therapy protocol