Hey Daisy, welcome to the forums! (:
I've been in the same position as you and have cleared my skin, so it is possible! I had low progesterone and high androgens (testosterone) as well — You can read my story here. Natural progesterone cream and DIM cleared me up 100% but there are other options out there that can work too. Here's a quick run-down on some natural options and what you're considering:
Natural progesterone cream is just that — natural progesterone in a cream. You apply it topically like a lotion anywhere on the body either from days 12-28 of your cycle or daily throughout your cycle, depending on what works for you. I used NPC daily for over a year and it improved many aspects of my health along with clearing most of my acne.
DIM is an anti-androgen and also supports healthy estrogen metabolism. It raises levels of 16-hydroxy (good) estrogens while lowering 2-hydroxy (harmful) estrogens which are potentially carcinogenic.
Saw Palmetto is also a natural anti-androgen. I haven't tried it personally, but there are people out there who have used it successfully. From what I understand, it can be somewhat estrogenic as well.
Spearmint tea has shown in studies to improve hirsutism, but I have not seen any studies nor anecdotes on it improving acne. I have personally drank it on a daily basis but saw no improvement.
Vitex helps with progesterone as well as reducing prolactin levels. Most sources say to only use vitex short term (no longer than 6 months at a time) but there are German studies suggesting it is totally safe long term. Again, some have found success with this while others haven't.
Vitamin D is important for regulation of hormones, and even people who get plenty of sun can still be deficient. I have seen quite a few stories of people's acne clearing on vitamin D alone, so it's important to make sure you are getting enough.
Inositol is an unofficial B vitamin which some have had success with. Here is WishClean's topic on the subject. She lists the benefits in the first post, like inositol's ability to lower testosterone... she saw dramatic results in her skin.
I don't know anything about Ashwaghanda. From what I understand, Dandelion tea helps with the liver and gallbladder, but doesn't have much effect on hormones... I don't see any harm in drinking these teas, but I wouldn't expect much improvement in your skin from them.
Anyway, I hope that helps clarify some options! If you have any more questions, feel free to ask... this forum is full of nice, helpful people. Also, with any hormonal treatment it takes time to see results... It can take anywhere from 3-6 months to see improvement, so please be patient! Good luck, and I wish you the best! (: