Help with custom transparent shader

I see this get asked a lot but a lot of the threads I found provide dead links.

I've done most of the detective work. I have an hair model that uses transparency and I want to turn culling off.

I have some code I found, which works well but I don't know where to add the 'Cull Off' part.

Could someone help please ?

Thanks.

 Shader "Custom/HairShader"   {
 Properties {
     _Color ("Main Color", Color) = (1,1,1,1)
     _MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
 }
  
 SubShader {
 
     Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"}
     LOD 200
  
 CGPROGRAM
 #pragma surface surf Lambert alpha
 
 sampler2D _MainTex;
 fixed4 _Color;
  
 struct Input {
     float2 uv_MainTex;
 };
  
 void surf (Input IN, inout SurfaceOutput o) {
     fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color;
     o.Albedo = c.rgb;
     o.Alpha = c.a;
 }
 ENDCG
 }
 
 
 }