LittleJumper

//luckily cinemachine is so easy, you can use it with out code
                                   

public void TakeDamage()
{
    PlayerHealt--;//do damage
    _particelSystemHeart.Play();
    int i = PlayerHealt;//check for correct heart to remove
    _material = _hearts[i].GetComponent-Image-().material;
    StartCoroutine(PopDown());//start heart animation
    if (CheckHealt())
        StartCoroutine(Death());
}

public void TakeHealt()
{
    int i = PlayerHealt;
    PlayerHealt++;
    _material = _hearts[i].GetComponent-Image-().material;
    //check for correct heart to revive
    StartCoroutine(PopUp());//start heart animation
}

private IEnumerator PopDown()
{
    float elapsedTime = 0f;
    while (elapsedTime < _dissolveTime)//while loop for the animation timer
    {
        elapsedTime += Time.deltaTime;

        float lerpedDissolve = Mathf.Lerp(1.1f, 0f, (elapsedTime / _dissolveTime));
        //lerp trough the dissolve
        _material.SetFloat(_dissolveAmount, lerpedDissolve);

        StartCoroutine(SetNullTimer());
        //reset for _material to evade any none intentional animations

        yield return null;
    }
}

private IEnumerator PopUp()
{

    float elapsedTime = 0f;
    while (elapsedTime < _dissolveTime)
    {
        elapsedTime += Time.deltaTime;

        float lerpedDissolve = Mathf.Lerp(0f, 1.1f, (elapsedTime / _dissolveTime));
        _material.SetFloat(_dissolveAmount, lerpedDissolve);

        StartCoroutine(SetNullTimer());

        yield return null;
    }
}