The weld object doesn't do it's job, any solutions?

Here's the script:

local player = game.Players.LocalPlayer

script.Parent.MouseButton1Click:Connect(function()
    local h1 = game.ReplicatedStorage.Hairs.h1:Clone()
    h1.Name = "h1"
    h1.Parent = player.Character.Head

    local weld = Instance.new("Weld")
    weld.Parent = h1
    weld.Part0 = player.Character.Head
    weld.Part1 = h1
    weld.C0 = CFrame.new(0,0,0)

end)

So the h1 parent is alright, weld parent is also alright, weld part0 and part1 are alright too but the actual welding doesn't happen, the part just doesn't get attached to the head.Any solutions?