Hyperpigmentation is one of the most persistent skincare concerns, affecting people of all skin types and ages. Whether caused by acne, excessive sun exposure, hormonal changes, inflammation, or aging, dark spots often remain long after the original trigger has disappeared. While many brightening serums and cosmetic products can improve mild discoloration, more stubborn pigmentation frequently requires stronger, targeted ingredients that address the root cause of excess melanin production. Among the most well-known depigmenting agents used in dermatology, hydroquinone continues to be regarded as the gold standard for treating localized hyperpigmentation. Higher-strength formulations, such as 5% hydroquinone solutions, are often considered…