diff --git a/src/PowderCoating.Web/Controllers/JobsController.cs b/src/PowderCoating.Web/Controllers/JobsController.cs
index b7f9840..896a931 100644
--- a/src/PowderCoating.Web/Controllers/JobsController.cs
+++ b/src/PowderCoating.Web/Controllers/JobsController.cs
@@ -503,9 +503,17 @@ public class JobsController : Controller
                 .OrderBy(i => i.Name)
                 .Select(i => new { i.Id, i.Name, i.Manufacturer, i.UnitOfMeasure, i.QuantityOnHand })
                 .ToList();
-            ViewBag.InventoryItemsForModal = System.Text.Json.JsonSerializer.Serialize(
-                inventoryItemsForModal,
-                new System.Text.Json.JsonSerializerOptions { PropertyNamingPolicy = System.Text.Json.JsonNamingPolicy.CamelCase });
+            var jsonOpts = new System.Text.Json.JsonSerializerOptions { PropertyNamingPolicy = System.Text.Json.JsonNamingPolicy.CamelCase };
+            ViewBag.InventoryItemsForModal = System.Text.Json.JsonSerializer.Serialize(inventoryItemsForModal, jsonOpts);
+
+            // IDs of powders already assigned to this job's coats — shown at top of log-material dropdown
+            var jobPowderIds = (jobDto.Items ?? new List<PowderCoating.Application.DTOs.Job.JobItemDto>())
+                .SelectMany(i => i.Coats ?? new List<PowderCoating.Application.DTOs.Job.JobItemCoatDto>())
+                .Where(c => c.InventoryItemId.HasValue)
+                .Select(c => c.InventoryItemId!.Value)
+                .Distinct()
+                .ToList();
+            ViewBag.JobPowderIds = System.Text.Json.JsonSerializer.Serialize(jobPowderIds, jsonOpts);
 
             // Pre-logged powder grouped by InventoryItemId (for Complete Job modal pre-fill)
             ViewBag.PreLoggedPowder = allJobTransactions
diff --git a/src/PowderCoating.Web/Views/Jobs/Details.cshtml b/src/PowderCoating.Web/Views/Jobs/Details.cshtml
index 87746fd..ff238ca 100644
--- a/src/PowderCoating.Web/Views/Jobs/Details.cshtml
+++ b/src/PowderCoating.Web/Views/Jobs/Details.cshtml
@@ -3162,10 +3162,11 @@
 <script>
 (function () {
     const inventoryItems = @Html.Raw(ViewBag.InventoryItemsForModal ?? "[]");
+    const jobPowderIds  = @Html.Raw(ViewBag.JobPowderIds ?? "[]");
     const jobId = @Model.Id;
     const logUrl = '@Url.Action("LogMaterial", "Jobs")';
     const token = document.querySelector('input[name="__RequestVerificationToken"]')?.value ?? '';
-    window.__logMaterial = { inventoryItems, jobId, logUrl, token };
+    window.__logMaterial = { inventoryItems, jobPowderIds, jobId, logUrl, token };
 })();
 </script>
 
diff --git a/src/PowderCoating.Web/wwwroot/js/log-material.js b/src/PowderCoating.Web/wwwroot/js/log-material.js
index e4c1b1c..286f551 100644
--- a/src/PowderCoating.Web/wwwroot/js/log-material.js
+++ b/src/PowderCoating.Web/wwwroot/js/log-material.js
@@ -4,6 +4,7 @@
  */
 (function () {
     let _items = [];
+    let _jobPowderIds = new Set();
     let _modal = null;
 
     // ── Combobox state ────────────────────────────────────────────────────────
@@ -35,6 +36,23 @@
         }
     }
 
+    function lmMakeRow(it) {
+        const label = it.name + (it.unitOfMeasure ? ' (' + it.unitOfMeasure + ')' : '');
+        const mfr = it.manufacturer
+            ? `<span class="text-muted ms-1" style="font-size:.78rem;">${escLm(it.manufacturer)}</span>`
+            : '';
+        return `<div class="lm-item-opt" style="padding:.35rem .75rem;font-size:.875rem;cursor:pointer;"
+                     data-id="${it.id}"
+                     data-qty="${it.quantityOnHand}"
+                     data-uom="${escLm(it.unitOfMeasure || '')}"
+                     data-label="${escLm(label)}"
+                     onmousedown="event.preventDefault(); lmComboSelect(this)"
+                     onmouseenter="this.style.background='#f0f4ff'"
+                     onmouseleave="this.classList.contains('lm-active') ? null : this.style.background=''">
+                ${escLm(label)}${mfr}
+             </div>`;
+    }
+
     function lmComboRender(query) {
         const dd = document.getElementById('lmItemDropdown');
         if (!dd) return;
@@ -47,20 +65,21 @@
             dd.innerHTML = '<div class="px-3 py-2 text-muted small">No items match.</div>';
             return;
         }
-        dd.innerHTML = filtered.map(it => {
-            const label = it.name + (it.unitOfMeasure ? ' (' + it.unitOfMeasure + ')' : '');
-            const mfr = it.manufacturer ? `<span class="text-muted ms-1" style="font-size:.78rem;">${escLm(it.manufacturer)}</span>` : '';
-            return `<div class="lm-item-opt" style="padding:.35rem .75rem;font-size:.875rem;cursor:pointer;"
-                         data-id="${it.id}"
-                         data-qty="${it.quantityOnHand}"
-                         data-uom="${escLm(it.unitOfMeasure || '')}"
-                         data-label="${escLm(label)}"
-                         onmousedown="event.preventDefault(); lmComboSelect(this)"
-                         onmouseenter="this.style.background='#f0f4ff'"
-                         onmouseleave="this.classList.contains('lm-active') ? null : this.style.background=''">
-                    ${escLm(label)}${mfr}
-                </div>`;
-        }).join('');
+
+        const jobItems   = filtered.filter(it => _jobPowderIds.has(it.id));
+        const otherItems = filtered.filter(it => !_jobPowderIds.has(it.id));
+
+        let html = '';
+        if (jobItems.length > 0) {
+            html += '<div class="px-3 py-1 text-muted" style="font-size:.72rem;letter-spacing:.04em;text-transform:uppercase;background:#f8f9fa;border-bottom:1px solid #dee2e6;">This Job</div>';
+            html += jobItems.map(lmMakeRow).join('');
+            if (otherItems.length > 0) {
+                html += '<div style="height:1px;background:#dee2e6;margin:.25rem 0;"></div>';
+                html += '<div class="px-3 py-1 text-muted" style="font-size:.72rem;letter-spacing:.04em;text-transform:uppercase;background:#f8f9fa;border-bottom:1px solid #dee2e6;">All Inventory</div>';
+            }
+        }
+        html += otherItems.map(lmMakeRow).join('');
+        dd.innerHTML = html;
     }
 
     function lmComboShow() {
@@ -245,6 +264,7 @@
         if (!cfg) return;
 
         _items = cfg.inventoryItems || [];
+        _jobPowderIds = new Set(cfg.jobPowderIds || []);
         _modal = new bootstrap.Modal(document.getElementById('logMaterialModal'));
 
         document.getElementById('lmQuantity').addEventListener('input', lmOnQtyInput);