Indeed. Dermatology Investigate demonstrates that heat can promote melanin production devoid of UV injury. Warmth increases inflammatory and vascular signaling within the skin, which is sufficient to induce pigmentation, especially in melasma-vulnerable and darker skin tones. You may prefer to enable or disable some or every one of these cookies, https://nikitapatel.mystrikingly.com/blog/why-does-skin-pigmentation-increase-in-summer/i/view_as_owner