Luôn luôn đốt cháy một cách dễ dàng, không bao giờ tans, màu da rất công bằng thường đốt cháy một cách dễ dàng, tans khó khăn; công bằng giai điệu da Burns vừa phải, tans dần dần, công bằng cho làn da trung bình Hiếm khi bỏng | 14 Clinical procedures in laser skin rejuvenation Table Fitzpatrick skin types Type Color Reaction to UVA Reaction to sun I Caucasian blond or red hair freckles fair skin blue eyes Very sensitive Always burns easily never tans very fair skin tone II Caucasian blond or red hair freckles fair skin blue or green eyes Very sensitive Usually burns easily tans with difficulty fair skin tone III Darker Caucasian light Asian Sensitive Burns moderately tans gradually fair to medium skin tone IV Mediterranean Asian Hispanic Moderately sensitive Rarely burns always tans well medium skin tone V Middle Eastern Latin light-skinned black Indian Minimally sensitive Very rarely burns tans very easily olive or dark skin tone VI Dark-skinned black Least sensitive Never burns deeply pigmented very dark skin tone Table Glogau wrinkle scale Skin type Age years Findings 1. no wrinkles Early 20s or 30s Early photoaging early pigmentary changes no keratoses fine wrinkles 2. wrinkles in motion 30s to 40s Early to moderate photoaging early senile lentigines no visible keratoses smile wrinkles 3. wrinkles at rest 50 plus Advanced photoaging dyschromia and telangiectasia visible keratoses wrinkles at rest 4 only wrinkles 60 or 70s Severe photoaging yellowish skin color previous skin malignancy generalized wrinkling SKIN Among the absolute hallmarks of an aging face are the changes associated with the skin. The most common changes associated with facial skin aging are those due to photoaging skin damage related to chronic sun exposure . This results in dyspigmented wrinkled inelastic skin with associated redness and dryness. Furthermore mild to moderate facial wrinkling and laxity with benign and malignant lesions round out the skin changes that should be addressed through many of the techniques presented in this book. See Tables and which show the Fitzpatrick and Glogau classifications of skin types and wrinkles respectively. VOLUME LOSS It is easy to overlook this particular .
