diff --git a/resources/views/admin/ingredient/edit.blade.php b/resources/views/admin/ingredient/edit.blade.php
index 0ca5033..3e48d7f 100755
--- a/resources/views/admin/ingredient/edit.blade.php
+++ b/resources/views/admin/ingredient/edit.blade.php
@@ -67,6 +67,23 @@
                     $('#delivery_time_days').val(option.data('days'));
                 }
             });
+
+            // AP-42: Live-Vorschau der Dichte — macht sofort sichtbar, wie ml in Gramm
+            // umgerechnet werden und dass das Feld beim Einkauf in ml zum Tragen kommt.
+            var $density = $('#density');
+            var $densityPreview = $('#density-preview');
+            function renderDensityPreview() {
+                var raw = String($density.val() || '').trim().replace(/\./g, '').replace(',', '.');
+                var d = parseFloat(raw);
+                if (!raw || isNaN(d) || d <= 0) {
+                    $densityPreview.text('{{ __('leer = Erfassung immer in Gramm.') }}');
+                    return;
+                }
+                var g = d.toLocaleString('de-DE', {minimumFractionDigits: 2, maximumFractionDigits: 4, useGrouping: false});
+                $densityPreview.text('1 ml = ' + g + ' g   ·   100 ml = ' + (d * 100).toLocaleString('de-DE', {maximumFractionDigits: 1, useGrouping: false}) + ' g');
+            }
+            $density.on('input change', renderDensityPreview);
+            renderDensityPreview();
         });
     </script>
 @endsection
diff --git a/resources/views/admin/ingredient/form.blade.php b/resources/views/admin/ingredient/form.blade.php
index a10c695..0707e51 100755
--- a/resources/views/admin/ingredient/form.blade.php
+++ b/resources/views/admin/ingredient/form.blade.php
@@ -177,16 +177,20 @@
             <div class="form-group col-sm-3">
                 <label class="form-label" for="default_factor">{{ __('Standard-Schwundfaktor') }}</label>
                 {{ Form::text('default_factor', $model->default_factor !== null ? formatNumber($model->default_factor) : formatNumber(1.10),  array('placeholder'=>'1,10', 'class'=>'form-control', 'id'=>'default_factor')) }}
+                <small class="form-text text-muted">{{ __('Überschuss/Schwund in der Rezeptur: Verbrauch = Rezeptur-Gramm × Faktor. 1,10 = 10 % Aufschlag. Wirkt in der Produktion, nicht im Einkauf.') }}</small>
             </div>
             <div class="form-group col-sm-3">
                 <label class="form-label" for="min_stock_alert">{{ __('Meldebestand (g)') }}</label>
                 {{ Form::text('min_stock_alert', $model->min_stock_alert !== null ? formatNumber($model->min_stock_alert) : '',  array('placeholder'=>__('optional'), 'class'=>'form-control', 'id'=>'min_stock_alert')) }}
             </div>
             <div class="form-group col-sm-3">
-                {{-- AP-42: Dichte g/ml — erlaubt die Erfassung des Wareneingangs in ml (100 ml × 0,79 = 79 g). --}}
+                {{-- AP-42: Dichte g/ml — reiner Umrechnungsfaktor ml→g, greift NUR beim Wareneingang, wenn die Einheit auf „ml" gestellt wird. Bestand bleibt intern in Gramm. --}}
                 <label class="form-label" for="density">{{ __('Dichte (g/ml)') }}</label>
-                {{ Form::text('density', $model->density !== null ? formatNumber($model->density) : '',  array('placeholder'=>__('z. B. 0,79 – optional'), 'class'=>'form-control', 'id'=>'density')) }}
-                <small class="form-text text-muted">{{ __('Leer = Erfassung in Gramm.') }}</small>
+                {{ Form::text('density', $model->density !== null ? formatNumber($model->density) : '',  array('placeholder'=>__('z. B. 0,91 – optional'), 'class'=>'form-control', 'id'=>'density')) }}
+                <small class="form-text text-muted">
+                    {{ __('Nur nötig, wenn du diesen Rohstoff in ml einkaufst (z. B. Öle/Tinkturen). Beim Wareneingang kannst du dann die Einheit auf „ml“ stellen; das System rechnet in Gramm um:') }}
+                    <span id="density-preview" class="d-block font-weight-bold text-body mt-1">{{ __('leer = Erfassung immer in Gramm.') }}</span>
+                </small>
             </div>
         </div>
 
diff --git a/resources/views/admin/inventory/raw-material-stock/show.blade.php b/resources/views/admin/inventory/raw-material-stock/show.blade.php
index f4b98cb..600fe8d 100644
--- a/resources/views/admin/inventory/raw-material-stock/show.blade.php
+++ b/resources/views/admin/inventory/raw-material-stock/show.blade.php
@@ -80,10 +80,15 @@
                     </span>
                 @endif
                 @if($ingredient->storageLabel())
-                    <span class="text-muted small">
+                    <span class="text-muted small mr-3">
                         {{ __('Lagerort') }}: <strong>{{ $ingredient->storageLabel() }}</strong>
                     </span>
                 @endif
+                @if($ingredient->density !== null)
+                    <span class="text-muted small" title="{{ __('Nur für den Einkauf in ml — der Bestand wird immer in Gramm geführt (1 ml × Dichte = g).') }}">
+                        {{ __('Dichte') }}: <strong>{{ \App\Services\Util::formatNumber($ingredient->density) }} g/ml</strong>
+                    </span>
+                @endif
             </div>
         </div>