can i use glutathione and hydroquinone together Best Skin Lightening Ingredient-Hydroquinone or Glutathione? Using Hydroquinone, Tretinoin, and Peptides

It inhibits tyrosinase, a key enzyme involved in melanin production, and it also shifts melanin synthesis towards lighter pheomelanin rather than darker eumelanin, contributing to brighter-looking skin. Mechanism of action on pigmentation Melanin is the pigment responsible for skin colour, and its overproduction contributes to tanning, dark spots, and uneven tone

GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring copper-binding tripeptide found in human plasma, saliva, and urine

L-Glutathione also helps block melanin synthesis and promotes skin lightening

Mechanism of Action The four-peptide blend operates through parallel and convergent pathways that together cover the major stages of tissue response early inflammation control, cellular recruitment, structural rebuilding, and resolution