diff --git a/apps/admin/src/pages/ProductEditPage.tsx b/apps/admin/src/pages/ProductEditPage.tsx
index 37c01a9..06c0891 100644
--- a/apps/admin/src/pages/ProductEditPage.tsx
+++ b/apps/admin/src/pages/ProductEditPage.tsx
@@ -566,7 +566,7 @@ export default function ProductEditPage() {
                 <tbody className="divide-y divide-white/5">
                   {variants.length > 0 ? variants.map((v, idx) => (
                     <tr key={idx} className="hover:bg-white/[0.02] transition-colors">
-                      {options.length > 0 ? options.map((opt, i) => {
+                      {options.length > 0 ? options.map((_, i) => {
                         const optVal = i === 0 ? v.option1 : i === 1 ? v.option2 : v.option3
                         return (
                           <td key={i} className="py-3 px-4 text-sm font-medium text-white">{optVal || '-'}</td>
diff --git a/apps/admin/src/pages/ProductsPage.tsx b/apps/admin/src/pages/ProductsPage.tsx
index 7b01dab..50c28d7 100644
--- a/apps/admin/src/pages/ProductsPage.tsx
+++ b/apps/admin/src/pages/ProductsPage.tsx
@@ -81,7 +81,7 @@ export default function ProductsPage() {
           headers: { 'Content-Type': 'application/json' },
           body: JSON.stringify({
             categoryId: selectedProduct.categoryId,
-            variants: selectedProduct.variants.map(v => ({ size: v.size, price: v.price })),
+            variants: selectedProduct.variants.map(v => ({ option1: v.option1, option2: v.option2, option3: v.option3, sku: v.sku, barcode: v.barcode, stock: v.stock, price: v.price })),
             images: updatedImages
           })
         })
@@ -145,7 +145,7 @@ export default function ProductsPage() {
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({
           categoryId: selectedProduct.categoryId,
-          variants: selectedProduct.variants.map(v => ({ size: v.size, price: v.price })),
+          variants: selectedProduct.variants.map(v => ({ option1: v.option1, option2: v.option2, option3: v.option3, sku: v.sku, barcode: v.barcode, stock: v.stock, price: v.price })),
           images: updatedImages
         })
       })
@@ -324,9 +324,9 @@ export default function ProductsPage() {
                     </span>
                   </td>
                   <td className="px-6 py-4">
-                    <p className="text-xs font-medium text-silver-metallic">{product.variants?.length || 0} Sizes</p>
+                    <p className="text-xs font-medium text-silver-metallic">{product.variants?.length || 0} Variants</p>
                     <p className="text-[10px] text-slate-600 truncate max-w-[120px]">
-                      {product.variants?.map(v => v.size).join(', ') || '-'}
+                      {product.variants?.map(v => [v.option1, v.option2, v.option3].filter(Boolean).join('/')).join(', ') || '-'}
                     </p>
                   </td>
                   <td className="px-6 py-4">
diff --git a/apps/spa/src/components/ProductCard.tsx b/apps/spa/src/components/ProductCard.tsx
index c34e8d7..078f920 100644
--- a/apps/spa/src/components/ProductCard.tsx
+++ b/apps/spa/src/components/ProductCard.tsx
@@ -26,7 +26,7 @@ export default function ProductCard({ product, enableQuickShop = false, category
   const { i18n, t } = useTranslation();
   const isWished = isInWishlist(product.id);
   const [selectedVariant, setSelectedVariant] = useState(product.variants?.[0] || null);
-  const displayName = resolveStr(product.name, i18n.language) || product.scent.name;
+  const displayName = resolveStr(product.name, i18n.language) || (product.brand ? product.brand.name : '');
   const displayCategoryName = categoryNameOverride || resolveStr(product.category.name, i18n.language);
 
   const handleWishlistClick = (e: React.MouseEvent) => {
@@ -52,7 +52,7 @@ export default function ProductCard({ product, enableQuickShop = false, category
         <img
           src={product.images?.[0]?.url || getCategoryImage(displayCategoryName)}
           className="w-full h-full object-cover group-hover:scale-105 transition-transform duration-700"
-          alt={product.scent.name}
+          alt={displayName}
           onError={(e) => {
             (e.target as HTMLImageElement).style.display = 'none';
           }}
@@ -100,7 +100,7 @@ export default function ProductCard({ product, enableQuickShop = false, category
                       : 'border-pop-black/10 bg-transparent text-pop-black/70 hover:border-pop-black/30 hover:bg-pop-black/5'
                   }`}
                 >
-                  {variant.size}
+                  {[variant.option1, variant.option2, variant.option3].filter(Boolean).join(' / ')}
                 </button>
               );
             })}
@@ -131,7 +131,7 @@ export default function ProductCard({ product, enableQuickShop = false, category
                   quantity: 1,
                   price: selectedVariant.price || 0,
                   productName: displayName,
-                  variantSize: selectedVariant.size,
+                  variantSize: [selectedVariant.option1, selectedVariant.option2, selectedVariant.option3].filter(Boolean).join(' / '),
                   productImage: product.images?.[0]?.url || getCategoryImage(displayCategoryName)
                 });
               }}
diff --git a/apps/spa/src/locales/en/translation.json b/apps/spa/src/locales/en/translation.json
index 24be2f5..780fb04 100644
--- a/apps/spa/src/locales/en/translation.json
+++ b/apps/spa/src/locales/en/translation.json
@@ -56,6 +56,7 @@
     "selectSize": "Select Size",
     "details": "Product Details",
     "scent": "Scent",
+    "brand": "Brand",
     "category": "Category",
     "relatedProducts": "Related Products",
     "moreRelated": "More {{category}}",
diff --git a/apps/spa/src/locales/ja/translation.json b/apps/spa/src/locales/ja/translation.json
index 25678e1..87b9d01 100644
--- a/apps/spa/src/locales/ja/translation.json
+++ b/apps/spa/src/locales/ja/translation.json
@@ -53,6 +53,7 @@
     "selectSize": "サイズを選択",
     "details": "商品詳細",
     "scent": "香り",
+    "brand": "ブランド",
     "category": "カテゴリー",
     "relatedProducts": "関連商品",
     "moreRelated": "関連する {{category}}",
diff --git a/apps/spa/src/locales/ko/translation.json b/apps/spa/src/locales/ko/translation.json
index e09f800..64a803e 100644
--- a/apps/spa/src/locales/ko/translation.json
+++ b/apps/spa/src/locales/ko/translation.json
@@ -53,6 +53,7 @@
     "selectSize": "사이즈 선택",
     "details": "상품 상세 정보",
     "scent": "향기",
+    "brand": "브랜드",
     "category": "카테고리",
     "relatedProducts": "관련 상품",
     "moreRelated": "더 많은 {{category}}",
diff --git a/apps/spa/src/locales/th/translation.json b/apps/spa/src/locales/th/translation.json
index 525db63..d887ac0 100644
--- a/apps/spa/src/locales/th/translation.json
+++ b/apps/spa/src/locales/th/translation.json
@@ -56,6 +56,7 @@
     "selectSize": "เลือกขนาด",
     "details": "รายละเอียดสินค้า",
     "scent": "กลิ่น",
+    "brand": "แบรนด์",
     "category": "หมวดหมู่",
     "relatedProducts": "สินค้าที่เกี่ยวข้อง",
     "moreRelated": "เพิ่มเติมในหมวด {{category}}",
diff --git a/apps/spa/src/locales/vi/translation.json b/apps/spa/src/locales/vi/translation.json
index ebd1136..0c2bbb7 100644
--- a/apps/spa/src/locales/vi/translation.json
+++ b/apps/spa/src/locales/vi/translation.json
@@ -53,6 +53,7 @@
     "selectSize": "Chọn kích thước",
     "details": "Chi tiết sản phẩm",
     "scent": "Mùi hương",
+    "brand": "Thương hiệu",
     "category": "Danh mục",
     "relatedProducts": "Sản phẩm liên quan",
     "moreRelated": "Thêm {{category}}",
diff --git a/apps/spa/src/locales/zh/translation.json b/apps/spa/src/locales/zh/translation.json
index daca676..4848599 100644
--- a/apps/spa/src/locales/zh/translation.json
+++ b/apps/spa/src/locales/zh/translation.json
@@ -53,6 +53,7 @@
     "selectSize": "选择尺寸",
     "details": "商品详情",
     "scent": "香气",
+    "brand": "品牌",
     "category": "类别",
     "relatedProducts": "相关商品",
     "moreRelated": "更多 {{category}}",
diff --git a/apps/spa/src/pages/ProductDetailPage.tsx b/apps/spa/src/pages/ProductDetailPage.tsx
index 157f062..2b2e875 100644
--- a/apps/spa/src/pages/ProductDetailPage.tsx
+++ b/apps/spa/src/pages/ProductDetailPage.tsx
@@ -40,7 +40,7 @@ export default function ProductDetailPage() {
     return v[lang] ?? v[lang.slice(0, 2)] ?? v['th'] ?? v['en'] ?? Object.values(v)[0] ?? ''
   }
 
-  const displayName = resolveStr(product?.name, i18n.language) || product?.scent?.name || ''
+  const displayName = resolveStr(product?.name, i18n.language) || product?.brand?.name || ''
 
   useEffect(() => {
     fetch(`${API_BASE}/categories?lang=${i18n.language}`)
@@ -134,7 +134,7 @@ export default function ProductDetailPage() {
       quantity: 1,
       price: currentVariant.price || product.price || 0,
       productName: displayName,
-      variantSize: currentVariant.size,
+      variantSize: [currentVariant.option1, currentVariant.option2, currentVariant.option3].filter(Boolean).join(' / '),
       productImage: product.images?.[0]?.url || getCategoryImage(typeof product.category.name === 'string' ? product.category.name : (product.category.name as any)?.en || '')
     })
   }
@@ -175,7 +175,7 @@ export default function ProductDetailPage() {
             <ProductImageGallery
               images={product.images || []}
               fallback={getCategoryImage(typeof product.category.name === 'string' ? product.category.name : (product.category.name as any)?.en || '')}
-              alt={product.scent.name}
+              alt={displayName}
               badgeText={typeof product.category.name === 'string' ? product.category.name : (product.category.name as any)?.[i18n.language] || (product.category.name as any)?.en || ''}
             />
           </div>
@@ -204,7 +204,7 @@ export default function ProductDetailPage() {
                 {formatPrice(currentVariant?.price)}
               </span>
               {currentVariant && (
-                <span className="text-spa-stone/60 text-sm font-semibold">/ {currentVariant.size}</span>
+                <span className="text-spa-stone/60 text-sm font-semibold">/ {[currentVariant.option1, currentVariant.option2, currentVariant.option3].filter(Boolean).join(' / ')}</span>
               )}
             </div>
 
@@ -224,7 +224,7 @@ export default function ProductDetailPage() {
                         : 'bg-spa-light text-spa-stone border-spa-stone/20 hover:border-spa-forest hover:text-spa-forest shadow-sm'
                     }`}
                   >
-                    {v.size}
+                    {[v.option1, v.option2, v.option3].filter(Boolean).join(' / ')}
                     <span className={`block text-[10px] mt-0.5 ${selectedVariant === i ? 'text-spa-light' : 'text-spa-stone/60'}`}>
                       {formatPrice(v.price)}
                     </span>
@@ -251,8 +251,8 @@ export default function ProductDetailPage() {
             {/* Meta */}
             <div className="border-t border-spa-stone/10 pt-6 grid grid-cols-2 gap-4 text-sm text-spa-stone/80">
               <div>
-                <span className="text-xs uppercase tracking-widest block mb-1 font-semibold text-spa-stone/60">{t('product.scent')}</span>
-                <span className="text-pop-black font-bold">{product.scent.name}</span>
+                <span className="text-xs uppercase tracking-widest block mb-1 font-semibold text-spa-stone/60">{t('product.brand', 'Brand')}</span>
+                <span className="text-pop-black font-bold">{product.brand?.name || ''}</span>
               </div>
               <div>
                 <span className="text-xs uppercase tracking-widest block mb-1 font-semibold text-spa-stone/60">{t('product.category')}</span>
@@ -337,7 +337,7 @@ export default function ProductDetailPage() {
                     : 'bg-spa-light border-spa-stone/20 text-spa-stone'
                 }`}
               >
-                {v.size}
+                {[v.option1, v.option2, v.option3].filter(Boolean).join(' / ')}
               </button>
             ))}
           </div>
@@ -346,7 +346,7 @@ export default function ProductDetailPage() {
         <div className="flex items-center justify-between gap-4">
            <div className="flex flex-col">
             <span className="text-[10px] uppercase tracking-widest text-spa-stone/60 font-semibold">
-              {product.variants && product.variants.length > 1 ? currentVariant?.size : t('cart.totalPrice')}
+              {product.variants && product.variants.length > 1 ? [currentVariant?.option1, currentVariant?.option2, currentVariant?.option3].filter(Boolean).join(' / ') : t('cart.totalPrice')}
             </span>
             <span className="text-xl font-bold text-rose-500">
               {formatPrice(currentVariant?.price)}