diff --git a/app/Helpers/BladeDirectivesHelper.php b/app/Helpers/BladeDirectivesHelper.php
new file mode 100644
index 0000000..ba14c2b
--- /dev/null
+++ b/app/Helpers/BladeDirectivesHelper.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace App\Helpers;
+
+use Illuminate\Support\Facades\Auth;
+use App\Models\SellUnit;
+use \Illuminate\Support\Str;
+
+class BladeDirectivesHelper 
+{
+    /**
+     * Format specific value.
+     * Used for blade directive @fmt_currency_without_auth.
+     * 
+     * @param mixed $value
+     * @return string
+     */
+    private static function formatPriceValue($value): string
+    {
+        if (is_float($value)) {
+            return sprintf('%s €', number_format($value, 2, ',', ' '));
+        }
+        return $value;
+    }
+
+    /**
+     * Show the formated value only if authorized.
+     * Used for blade directive @fmt_currency and @fmt_currency_without_ttc.
+     * 
+     * @param mixed $value
+     * @return string
+     */
+    public static function formatCurrency($value): string
+    {
+        if (!self::shouldShowPrices()) {
+            return '-.--';
+        }
+        return self::formatPriceValue($value);
+    }
+
+    /**
+     * Check if prices must be shown or not.
+     * 
+     * @return bool
+     */
+    private static function shouldShowPrices(): bool
+    {
+        return (config('bosettings.show_prices_authenticated') === "authenticated" && Auth::guard('customer')->check())
+            || config('bosettings.show_prices_guest') == "guest";
+    }
+
+    /**
+     * Format the sales unit according to configuration.
+     * Used for blade directive @fmt_sellunit.
+     * 
+     * @param mixed $expression
+     * @return string
+     */
+    public static function formatSellUnit($expression): string
+    {
+        if (config('bosettings.sell_unit_management') == "strict") {
+            return !empty($expression) ? sprintf('/ %s', SellUnit::make($expression)->label) : '';
+        }
+        return !empty($expression) ? sprintf('/ %s', $expression) : '';
+    }
+
+    /**
+     * Extract a title produced according to the theme configuration.
+     * Used for blade directive @excerpt_product_title.
+     * 
+     * @param string   $expression
+     * @param int|null $limit
+     * @return string
+     */
+    public static function excerptTitle(string $expression, $limit = null): string
+    {
+        $limit = $limit ?? config('theme.max_product_title_length');
+        return Str::limit($expression, $limit);
+    }
+}
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index 02d4a4b..1e64db1 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -71,58 +71,21 @@ class AppServiceProvider extends ServiceProvider
             View::share('published_tags', $tags);
         }
 
+        // Use blade directives helper to prevent blade files from being cached.
         Blade::directive('fmt_currency_without_auth', function ($expression) {
-            return "<?php
-                    if(is_float($expression)) {
-                        echo sprintf('%s €', number_format($expression, 2, ',', ' '));
-                    } else {
-                        echo $expression;
-                    } ?>";
+            return "<?php echo \App\Helpers\BladeDirectivesHelper::formatPriceValue($expression); ?>";
         });
-
         Blade::directive('fmt_currency', function ($expression) {
-            // Prix transmis en fonction du setting show_prices.
-            if (
-                (config('bosettings.show_prices_authenticated') === "authenticated" && Auth::guard('customer')->check())
-                || config('bosettings.show_prices_guest') == "guest"
-            ) {
-                return "<?php
-                            if(is_float($expression)) {
-                                echo sprintf('%s €', number_format($expression, 2, ',', ' '));
-                            } else {
-                                echo $expression;
-                            } ?>";
-            }
-            return "-.--";
+            return "<?php echo \App\Helpers\BladeDirectivesHelper::formatCurrency($expression); ?>";
         });
-
         Blade::directive('fmt_currency_without_ttc', function ($expression) {
-            // Prix transmis en fonction du setting show_prices.
-            if (
-                (config('bosettings.show_prices_authenticated') === "authenticated" && Auth::guard('customer')->check())
-                || config('bosettings.show_prices_guest') == "guest"
-            ) {
-                return "<?php
-                            if(is_float($expression)) {
-                                echo sprintf('%s €', number_format($expression, 2, ',', ' '));
-                            } else {
-                                echo $expression;
-                            } ?>";
-            }
-            return "-.--";
+            return "<?php echo \App\Helpers\BladeDirectivesHelper::formatCurrency($expression); ?>";
         });
-
         Blade::directive('fmt_sellunit', function ($expression) {
-            if (config('bosettings.sell_unit_management') == "strict") {
-                return "<?php if(!empty($expression)) { echo sprintf('/ %s', SellUnit::make($expression)->label); } ?>";
-            } else {
-                return "<?php if(!empty($expression)) { echo sprintf('/ %s', $expression); } ?>";
-            }
+            return "<?php echo \App\Helpers\BladeDirectivesHelper::formatSellUnit($expression); ?>";
         });
-
         Blade::directive('excerpt_product_title', function ($expression) {
-            $limit = config('theme.max_product_title_length');
-            return "<?php echo Illuminate\Support\Str::limit($expression,$limit) ?>";
+            return "<?php echo \App\Helpers\BladeDirectivesHelper::excerptTitle($expression); ?>";
         });
 
         // Default paginator template for back Office.