diff --git a/rtdata/languages/default b/rtdata/languages/default
index 30fdd6ab9..9d6c90aa1 100644
--- a/rtdata/languages/default
+++ b/rtdata/languages/default
@@ -2003,6 +2003,7 @@ TP_LOCALLAB_EXCLUTYPE_TOOLTIP;Normal spot use recursive data.\nExcluding spot re
 TP_LOCALLAB_EXNORM;Normal spot
 TP_LOCALLAB_EXECLU;Excluding spot
 TP_LOCALLAB_EXPOSE;Exposure
+TP_LOCALLAB_EXPOSURE_TOOLTIP;In some cases (strong shadows ..) you can use the module "Shadows Highlights"
 TP_LOCALLAB_EXPCHROMA;Chroma compensation
 TP_LOCALLAB_LOC_CONTRAST;Local contrast
 TP_LOCALLAB_REFLABEL;Ref. (0..1) Chroma=%1 Luma=%2 Hue=%3
@@ -2051,7 +2052,7 @@ TP_LOCALLAB_SHAPETYPE;Shape RT-spot area
 TP_LOCALLAB_SHAPE_TOOLTIP;Rectangle is only in normal mode.
 TP_LOCALLAB_ELI;Elipse
 TP_LOCALLAB_RECT;Rectangle
-TP_LOCALLAB_SHADOWHIGHLIGHT_TOOLTIP;Can be used instead - or in complement - of exposure module in difficult cases
+TP_LOCALLAB_SHADOWHIGHLIGHT_TOOLTIP;Can be used instead - or in complement - of exposure module in difficult cases.\nThe use of Denoise may be necessary : lightening the shadows
 TP_LOCALLAB_SHARP;Sharpening
 TP_LOCALLAB_SHARRADIUS;Radius
 TP_LOCALLAB_SHARAMOUNT;Amount
diff --git a/rtgui/locallab.cc b/rtgui/locallab.cc
index b4cb3a1de..5d61604be 100644
--- a/rtgui/locallab.cc
+++ b/rtgui/locallab.cc
@@ -384,8 +384,6 @@ Locallab::Locallab():
     colorBox->pack_start(*invers);
     maskcolFrame->set_label_align(0.025, 0.5);
     ToolParamBlock* const maskcolBox = Gtk::manage(new ToolParamBlock());
-//    maskcolBox->pack_start(*transLabels, Gtk::PACK_SHRINK, 4);
-//    maskcolBox->pack_start(*showmaskcolMethod, Gtk::PACK_SHRINK, 0);
     maskcolBox->pack_start(*showmaskcolMethod, Gtk::PACK_SHRINK, 4);
     maskcolBox->pack_start(*enaColorMask, Gtk::PACK_SHRINK, 0);
     maskcolBox->pack_start(*maskCurveEditorG, Gtk::PACK_SHRINK, 4); // Padding is mandatory to correct behavior of curve editor
@@ -402,6 +400,7 @@ Locallab::Locallab():
     // Exposure
     expexpose->signal_button_release_event().connect_notify(sigc::bind(sigc::mem_fun(this, &Locallab::foldAllButMe), expexpose));
     enableexposeConn = expexpose->signal_enabled_toggled().connect(sigc::bind(sigc::mem_fun(this, &Locallab::enableToggled), expexpose));
+    expexpose->set_tooltip_text(M("TP_LOCALLAB_EXPOSURE_TOOLTIP"));
 
     expcomp->setAdjusterListener(this);
 
@@ -492,8 +491,6 @@ Locallab::Locallab():
     maskexpFrame->set_label_align(0.025, 0.5);
     ToolParamBlock* const maskexpBox = Gtk::manage(new ToolParamBlock());
     maskexpBox->pack_start(*showmaskexpMethod, Gtk::PACK_SHRINK, 4);
-//    maskexpBox->pack_start(*transLabels2, Gtk::PACK_SHRINK, 4);
-//    maskexpBox->pack_start(*showmaskexpMethod, Gtk::PACK_SHRINK, 0);
     maskexpBox->pack_start(*enaExpMask, Gtk::PACK_SHRINK, 0);
     maskexpBox->pack_start(*maskexpCurveEditorG, Gtk::PACK_SHRINK, 4); // Padding is mandatory to correct behavior of curve editor
     maskexpBox->pack_start(*blendmaskexp, Gtk::PACK_SHRINK, 0);