How to put logout image in all page header

i want to display logout/add person image on all page .
currently i am using below code

  <ion-buttons start>
    <button royal>
      <ion-icon name="search"></ion-icon>
  <ion-buttons end>
    <button royal>
      <ion-icon name="person-add"></ion-icon>
<ion-content padding>
  <ion-item *ngFor="let item of pages" (click)="itemSelected(item.title)">
    <ion-avatar item-left>
      <img src="{{item.image}}">

but using above code i set only one page but i want in all page .